禁止Android 横屏竖屏切换 .

来源：互联网发布：非农数据网址编辑：程序博客网时间：2024/05/01 23:33

在Android中要让一个程序的界面始终保持一个方向，不随手机方向转动而变化的办法：只要在AndroidManifest.xml里面配置一下就可以了。

在AndroidManifest.xml的activity(需要禁止转向的activity)配置中加入android:screenOrientation=”landscape”属性即可(landscape是横向，portrait是纵向)。

另外，android中每次屏幕方向切换时都会重启Activity，所以应该在Activity销毁前保存当前活动的状态，在Activity再次Create的时候载入配置。要避免在转屏时重启activity，可以通过在androidmanifest.xml文件中重新定义方向(给每个activity加上android:configChanges=”keyboardHidden|orientation”属性)，并根据Activity的重写onConfigurationChanged(Configuration newConfig)方法来控制，这样在转屏时就不会重启activity了，而是会去调用onConfigurationChanged(Configuration newConfig)这个方法。

示例代码如下：

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<?xmlversion="1.0"encoding="utf-8"?>
<manifestxmlns:android="http://schemas.android.com/apk/res/android"
    package="com.liananse.ideal"
    android:versionCode="1"
    android:versionName="1.1">
 
    <uses-sdkandroid:minSdkVersion="10"/>
 
    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name">
        <activity
            android:label="@string/app_name"
            android:name="com.liananse.WelcomeActivity"
            android:screenOrientation="portrait"
            android:configChanges="keyboardHidden|orientation">
            <intent-filter>
                <actionandroid:name="android.intent.action.MAIN"/>
 
                <categoryandroid:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
        </activity>
        <activity
            android:name="com.liananse.activity.MainActivity"
            android:screenOrientation="portrait"
            android:configChanges="keyboardHidden|orientation"></activity>
        <activity
            android:name="com.liananse.activity.MusicActivity"
            android:screenOrientation="portrait"
            android:configChanges="keyboardHidden|orientation"></activity>
        <activity
            android:name="com.liananse.activity.config.IdealAbout"
            android:theme="@android:style/Theme.NoTitleBar"
            android:screenOrientation="portrait"
            android:configChanges="keyboardHidden|orientation"></activity>
        <activity
            android:name="com.liananse.activity.config.IdealSetting"
            android:theme="@android:style/Theme.NoTitleBar"
            android:screenOrientation="portrait"
            android:configChanges="keyboardHidden|orientation"></activity>
        <activity
            android:name="net.youmi.android.AdActivity"
            android:configChanges="keyboard|keyboardHidden|orientation"
            android:screenOrientation="portrait"/>
        <meta-dataandroid:name="YOUMI_CHANNEL"android:value="0"/>
    </application>
    <uses-permissionandroid:name="android.permission.INTERNET"/>
    <uses-permissionandroid:name="android.permission.READ_PHONE_STATE"/>
    <uses-permissionandroid:name="android.permission.ACCESS_NETWORK_STATE"/>
    <uses-permissionandroid:name="android.permission.ACCESS_COARSE_LOCATION"/>
    <uses-permissionandroid:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
</manifest>

转自：http://www.open-open.com/lib/view/open1328278861750.html

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