我如何禁用景观模式的一些观点在我的Android应用程序?
当前回答
如果你的活动与第一个设备朝向状态相关,在onCreate方法中获取当前设备朝向,然后永远修复它:
int deviceRotation = ((WindowManager) getBaseContext().getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay().getOrientation();
if(deviceRotation == Surface.ROTATION_0) {
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
}
else if(deviceRotation == Surface.ROTATION_180)
{
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT);
}
else if(deviceRotation == Surface.ROTATION_90)
{
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
}
else if(deviceRotation == Surface.ROTATION_270)
{
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);
}
其他回答
在oncreate()方法中添加一个类:
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
在你声明你的活动的manifest文件中添加android:screenOrientation="portrait"。是这样的:
<activity
android:name=".yourActivity"
....
android:screenOrientation="portrait" />
如果你想使用Java代码,试试:
setRequestedOrientation (ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
在onCreate()中调用setContentView方法之前。
<android . . . >
. . .
<manifest . . . >
. . .
<application>
<activity
android:name=".MyActivity"
android:screenOrientation="portrait"
android:configChanges="keyboardHidden|orientation">
</activity>
</application>
</manifest>
</android>
在你的manifest中添加android:screenOrientation="portrait"。如果您想为特定的活动应用模式,请在所需的活动标记中定义此模式。或者在应用程序标签中定义整个应用程序。比如:
<application
<!-- ... -->
android:screenOrientation="portrait"
</application>
如何在一些视图中改变方向
不是锁定整个活动的方向,你可以使用这个类从你的任何视图中动态地锁定方向:
让你的视图成为景观
OrientationUtils.lockOrientationLandscape(mActivity);
将视图设置为竖屏
OrientationUtils.lockOrientationPortrait(mActivity);
解锁取向
OrientationUtils.unlockOrientation(mActivity);
方向Util类
import android.app.Activity;
import android.content.Context;
import android.content.pm.ActivityInfo;
import android.content.res.Configuration;
import android.os.Build;
import android.view.Surface;
import android.view.WindowManager;
/* * This class is used to lock orientation of android app in nay android devices
*/
public class OrientationUtils {
private OrientationUtils() {
}
/** Locks the device window in landscape mode. */
public static void lockOrientationLandscape(Activity activity) {
activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR_LANDSCAPE);
}
/** Locks the device window in portrait mode. */
public static void lockOrientationPortrait(Activity activity) {
activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
}
/** Locks the device window in actual screen mode. */
public static void lockOrientation(Activity activity) {
final int orientation = activity.getResources().getConfiguration().orientation;
final int rotation = ((WindowManager) activity.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay()
.getRotation();
// Copied from Android docs, since we don't have these values in Froyo
// 2.2
int SCREEN_ORIENTATION_REVERSE_LANDSCAPE = 8;
int SCREEN_ORIENTATION_REVERSE_PORTRAIT = 9;
// Build.VERSION.SDK_INT <= Build.VERSION_CODES.FROYO
if (!(Build.VERSION.SDK_INT <= Build.VERSION_CODES.FROYO)) {
SCREEN_ORIENTATION_REVERSE_LANDSCAPE = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;
SCREEN_ORIENTATION_REVERSE_PORTRAIT = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;
}
if (rotation == Surface.ROTATION_0 || rotation == Surface.ROTATION_90) {
if (orientation == Configuration.ORIENTATION_PORTRAIT) {
activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
} else if (orientation == Configuration.ORIENTATION_LANDSCAPE) {
activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
}
} else if (rotation == Surface.ROTATION_180 || rotation == Surface.ROTATION_270) {
if (orientation == Configuration.ORIENTATION_PORTRAIT) {
activity.setRequestedOrientation(SCREEN_ORIENTATION_REVERSE_PORTRAIT);
} else if (orientation == Configuration.ORIENTATION_LANDSCAPE) {
activity.setRequestedOrientation(SCREEN_ORIENTATION_REVERSE_LANDSCAPE);
}
}
}
/** Unlocks the device window in user defined screen mode. */
public static void unlockOrientation(Activity activity) {
activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_USER);
}
}
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