安卓基础笔记之错误ActivityManager: Warning: Activity not started, its current task has been
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原因是:两个应用起了同样的名字,模拟器总是识别第一个
或者是两个应用中的一个已经在系统的缓存中,这是android的机制
解决方法是:重新启动一下模拟器;如果还是不行,可以先把模拟器delete掉再重新add就可以了。
2、另外,若是有版本信息警告:
WARNING: Application does not specify an API level requirement!
在androidMainfest.xml 里的<manifest></manifest>之间的标记符添加 <uses-sdk android:minSdkVersion="8" />这行xml代码就行。其中7表示version2.2的版本
3、若已经添加还出现如下警告:
WARNING: <uses-sdk> tag should specify a target API level (the highest verified version; when running on later
versions, compatibility behaviors may be enabled) withandroid:targetSdkVersion="?"
只要在上面的地方再设置一个target目标版本就ok了(见如下蓝色改动地方)
<uses-sdk android:minSdkVersion="8"
4、若出现这个警告:
<uses-permission> tag appears after <application> tag
把<uses-permission> 放到 <application> 前面即可消除,据说是新版本的“特性”
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