小编moo*_*rka的帖子

作为测试样本,应用程序有2个活动:MainActivity在按钮单击时启动SecondActivity.它在Android 4.0.4上工作正常,但在Android 4.1.2上我遇到了意外行为.

系统设置中的AutoRotation已关闭(或打开 - 无关紧要,无论如何都会忽略"后面"选项). android:screenOrientation="landscape"为MainActivity设置,并android:screenOrientation="behind"为SecondActivity设置,这意味着必须以横向方向启动SecondActivity.适用于Android 4.0.4,但在Android 4.1.2上,SecondActivity以纵向方向开始.

AndroidManifest.xml中:

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="16" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.my.example.testbehindorientation.MainActivity"
        android:label="@string/app_name"
        android:screenOrientation="landscape" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <activity
        android:name="com.my.example.testbehindorientation.SecondActivity"
        android:configChanges="screenSize|orientation"
        android:label="@string/title_activity_second"
        android:screenOrientation="behind" >
    </activity>
</application>

SecondActivity.java:

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_second);
    logOrientation("onCreate");
}


@Override
protected void onDestroy() {
    super.onDestroy();
    logOrientation("onDestroy");
}

@Override
protected void onResume() {
    super.onResume();
    logOrientation("onResume");
}

private void logOrientation(String prefix) {
        int requestedOrientation = …