如何解决Android 5.0中出现的警告： Service Intent must be explicit:

1.错误描述

今天在Android4.4 的小米4手机上运行我的程序的时候没有报错，而在Android 5.1的华为P7上运行我的程序的时候报了以下的错误，错误提示如下：

<code class="hljs avrasm has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">E/AndroidRuntime(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12500</span>): FATAL EXCEPTION: mainE/AndroidRuntime(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12500</span>): Process: <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.xtc</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.watch</span>, PID: <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12500</span>E/AndroidRuntime(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12500</span>): java<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.lang</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.IllegalArgumentException</span>: Service Intent must be explicit: Intent { act=<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.xtc</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.kuwo</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.watch</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.MUSIC</span>_PLAY_SERVICE (has extras) }E/AndroidRuntime(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12500</span>):        at android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.app</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.ContextImpl</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.validateServiceIntent</span>(ContextImpl<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.java</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1847</span>)E/AndroidRuntime(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12500</span>):        at android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.app</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.ContextImpl</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.startServiceCommon</span>(ContextImpl<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.java</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1876</span>)E/AndroidRuntime(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12500</span>):        at android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.app</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.ContextImpl</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.startService</span>(ContextImpl<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.java</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">1860</span>)E/AndroidRuntime(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12500</span>):        at android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.content</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.ContextWrapper</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.startService</span>(ContextWrapper<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.java</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">516</span>)E/AndroidRuntime(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12500</span>):        at <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.xtc</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.watch</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.kuwo</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.activity</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.WatchMusicPlay</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.pauseMusic</span>(WatchMusicPlay<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.java</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">314</span>)E/AndroidRuntime(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12500</span>):        at <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.xtc</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.watch</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.kuwo</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.activity</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.WatchMusicPlay</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.access</span>$600(WatchMusicPlay<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.java</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">32</span>)E/AndroidRuntime(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12500</span>):        at <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.xtc</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.watch</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.kuwo</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.activity</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.WatchMusicPlay</span>$3<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.onClick</span>(WatchMusicPlay<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.java</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">220</span>)E/AndroidRuntime(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12500</span>):        at android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.view</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.View</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.performClick</span>(View<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.java</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">4790</span>)E/AndroidRuntime(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12500</span>):        at android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.view</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.View</span>$PerformClick<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.run</span>(View<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.java</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">19933</span>)E/AndroidRuntime(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12500</span>):        at android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.os</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.Handler</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.handleCallback</span>(Handler<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.java</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">739</span>)E/AndroidRuntime(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12500</span>):        at android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.os</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.Handler</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.dispatchMessage</span>(Handler<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.java</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">95</span>)E/AndroidRuntime(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12500</span>):        at android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.os</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.Looper</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.loop</span>(Looper<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.java</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">135</span>)E/AndroidRuntime(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12500</span>):        at android<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.app</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.ActivityThread</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.main</span>(ActivityThread<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.java</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">5569</span>)E/AndroidRuntime(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12500</span>):        at java<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.lang</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.reflect</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.Method</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.invoke</span>(Native Method)E/AndroidRuntime(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12500</span>):        at java<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.lang</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.reflect</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.Method</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.invoke</span>(Method<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.java</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">372</span>)E/AndroidRuntime(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12500</span>):        at <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.android</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.internal</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.os</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.ZygoteInit</span>$MethodAndArgsCaller<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.run</span>(ZygoteInit<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.java</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">931</span>)E/AndroidRuntime(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">12500</span>):        at <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">com</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.android</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.internal</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.os</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.ZygoteInit</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.main</span>(ZygoteInit<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.java</span>:<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">726</span>)</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li></ul>

而我启动Service的Intent代码如下所示：

<code class="hljs avrasm has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">        Intent intent = new Intent()<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>        intent<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.setAction</span>(MUSIC_PLAY_SERVICE)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>        intent<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.putExtra</span>(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"MSG"</span>, Constants<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.PlayerMsg</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.PAUSE</span>_MSG)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;  //暂停播放音乐</span>        intent<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.putExtra</span>(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"musicURL"</span>, musicURL)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;  //歌曲URL</span>        startService(intent)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li></ul>

2.错误原因

有些时候我们使用Service的时需要采用隐私启动的方式，但是Android 5.0一出来后，其中有个特性就是Service Intent must be explitict，也就是说从Android Lollipop版本（Android 5.0）开始，service服务必须采用显示方式启动。

而android源码是这样写的（源码位置：sdk/sources/android-21/android/app/ContextImpl.java）：

startService(Intent service)方法

startService(Intent service)方法代码如下

<code class="hljs java has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"> <span class="hljs-annotation" style="color: rgb(155, 133, 157); box-sizing: border-box;">@Override</span>    <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span> ComponentName <span class="hljs-title" style="box-sizing: border-box;">startService</span>(Intent service) {        warnIfCallingFromSystemProcess();        <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> startServiceCommon(service, mUser);    }</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li></ul>

startServiceCommon(Intent service, UserHandle user)方法

上面的startService(Intent service)方法调用的是startServiceCommon(Intent service, UserHandle user)，代码如下所示：

<code class="hljs lasso has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">private</span> ComponentName startServiceCommon(Intent service, UserHandle user) {        try {            validateServiceIntent(service);            service<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>prepareToLeaveProcess();            ComponentName <span class="hljs-literal" style="color: rgb(0, 102, 102); box-sizing: border-box;">cn</span> <span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">=</span> ActivityManagerNative<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>getDefault()<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>startService(                mMainThread<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>getApplicationThread(), service,                service<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>resolveTypeIfNeeded(getContentResolver()), user<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>getIdentifier());            <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (<span class="hljs-literal" style="color: rgb(0, 102, 102); box-sizing: border-box;">cn</span> <span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">!=</span> <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">null</span>) {                <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (<span class="hljs-literal" style="color: rgb(0, 102, 102); box-sizing: border-box;">cn</span><span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>getPackageName()<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">equals</span>(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"!"</span>)) {                    throw <span class="hljs-literal" style="color: rgb(0, 102, 102); box-sizing: border-box;">new</span> SecurityException(                            <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"Not allowed to start service "</span> <span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">+</span> service                            <span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">+</span> <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">" without permission "</span> <span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">+</span> <span class="hljs-literal" style="color: rgb(0, 102, 102); box-sizing: border-box;">cn</span><span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>getClassName());                } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (<span class="hljs-literal" style="color: rgb(0, 102, 102); box-sizing: border-box;">cn</span><span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>getPackageName()<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">equals</span>(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"!!"</span>)) {                    throw <span class="hljs-literal" style="color: rgb(0, 102, 102); box-sizing: border-box;">new</span> SecurityException(                            <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"Unable to start service "</span> <span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">+</span> service                            <span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">+</span> <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">": "</span> <span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">+</span> <span class="hljs-literal" style="color: rgb(0, 102, 102); box-sizing: border-box;">cn</span><span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>getClassName());                }            }            <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> <span class="hljs-literal" style="color: rgb(0, 102, 102); box-sizing: border-box;">cn</span>;        } catch (RemoteException e) {            <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span> <span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">null</span>;        }    }</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li></ul>

validateServiceIntent(Intent service)方法

上面的startServiceCommon(Intent service, UserHandle user)方法中调用的validateServiceIntent(Intent service)方法代码如下所示：

<code class="hljs cs has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">private</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> <span class="hljs-title" style="box-sizing: border-box;">validateServiceIntent</span>(Intent service) {        <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (service.getComponent() == <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span> && service.getPackage() == <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">null</span>) {            <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span> (getApplicationInfo().targetSdkVersion >= Build.VERSION_CODES.LOLLIPOP) {                IllegalArgumentException ex = <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">new</span> IllegalArgumentException(                        <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"Service Intent must be explicit: "</span> + service);                <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">throw</span> ex;            } <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span> {                Log.w(TAG, <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"Implicit intents with startService are not safe: "</span> + service                        + <span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">" "</span> + Debug.getCallers(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">2</span>, <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">3</span>));            }        }    }</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li></ul>

可以看得出来，就是在validateServiceIntent(Intent service)方法中判断如果大于Build.VERSION_CODES.LOLLIPOP版本的话，并且启动Service的Intent如果没有设置Component和Package的话就会跑出异常java.lang.IllegalArgumentException: Service Intent must be explicit:

3.解决方法

设置要启动Service的Intent的Action和packageName

<code class="hljs avrasm has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">        Intent intent = new Intent()<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>        intent<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.setAction</span>(MUSIC_PLAY_SERVICE)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>        intent<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.putExtra</span>(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"MSG"</span>, Constants<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.PlayerMsg</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.PAUSE</span>_MSG)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;  //暂停播放音乐</span>        intent<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.putExtra</span>(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"musicURL"</span>, musicURL)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;  //歌曲URL</span>        startService(intent)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li></ul>

改为：

<code class="hljs avrasm has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">        Intent intent = new Intent()<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>        intent<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.setAction</span>(MUSIC_PLAY_SERVICE)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>        //不加这句话的话 android <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">5.0</span>以上会报：Service Intent must be explitict        intent<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.setPackage</span>(getPackageName())<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span>        intent<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.putExtra</span>(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"MSG"</span>, Constants<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.PlayerMsg</span><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.PAUSE</span>_MSG)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;  //暂停播放音乐</span>        intent<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">.putExtra</span>(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"musicURL"</span>, musicURL)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;  //歌曲URL</span>        startService(intent)<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">;</span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li></ul>

以上代码就是加了一行

<code class="hljs scss has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: 'Source Code Pro', monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">        <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//不加这句话的话 android 5.0以上会报：Service Intent must be explitict</span>        intent<span class="hljs-class" style="box-sizing: border-box;">.setPackage</span>(<span class="hljs-function" style="box-sizing: border-box;">getPackageName()</span>);</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right-width: 1px; border-right-style: solid; border-right-color: rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li></ul>

此方式是google官方推荐使用的解决方法。

在此附上地址供大家参考：http://developer.android.com/goo … tml#billing-service,有兴趣的可以去看看。

下面是http://developer.android.com/goo … tml#billing-service网站的截图，如下所示：

作者：欧阳鹏 欢迎转载，与人分享是进步的源泉！ 
转载请保留原文地址：http://blog.csdn.net/ouyang_peng