我试图在android应用程序中锁定屏幕orientation
。当特定按钮单击时,我使用以下代码锁定了屏幕方向。
// Inside button click
Display display = ((WindowManager) getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
if (display.getOrientation() == 1) {
setRequestedOrientation(0);
} else if (display.getOrientation() == 0) {
setRequestedOrientation(1);
} else if (display.getOrientation() == 3) {
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);
}
以上代码适用于横向和纵向屏幕方向,但不适用于反向横向模式。在这种情况下,我的活动总是将其orientation
更改为默认landscape
模式。此外,我注意到,当设备处于反向横向模式时, display.getOrientation()
始终返回3。我如何找到解决此问题的方法?
我一直在使用API 8处理相同的问题。如果您在调用reserseLandscape模式,则看起来像
getResources().getConfiguration().orientation
Android将返回2(SCREEN_ORIENTATION_USER),这根本不会锁定方向。实际上,即使该值实际上存在,也甚至没有为ActivityInfo类定义常量SCREEN_ORIENTATION_REVERSE_LANDSCAPE。对于我的应用程序,我最终创建了此方法:
public void lockScreenOrientation() {
switch (((WindowManager) getSystemService(WINDOW_SERVICE))
.getDefaultDisplay().getRotation()) {
case Surface.ROTATION_90:
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
break;
case Surface.ROTATION_180:
setRequestedOrientation(9/* reversePortait */);
break;
case Surface.ROTATION_270:
setRequestedOrientation(8/* reverseLandscape */);
break;
default :
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
}
}
[我在需要锁定方向时就调用此方法,然后我可以简单地调用它来释放它
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);
希望有帮助。
public void lockScreenOrientation() {
switch (((WindowManager) getSystemService(WINDOW_SERVICE))
.getDefaultDisplay().getRotation()) {
case Surface.ROTATION_90:
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
break;
case Surface.ROTATION_180:
setRequestedOrientation(9/* reversePortait */);
break;
case Surface.ROTATION_270:
setRequestedOrientation(8/* reverseLandscape */);
break;
default :
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
}
}
autremoi的答案对我有用,我创建了一个新答案,因为我的名声还没有让我投票给他。
我的代码中唯一的区别是我与另一个传感器一起恢复了传感器
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR);
在您的AndroidManifest文件中,只需键入以下代码:
android:configChanges="keyboard|orientation|keyboardHidden|screenSize"
android:screenOrientation="reverseLandscape"
示例:
<activity
android:name="com.gaspar.slinfilipino.Quiz"
android:label="@string/title_activity_quiz"
android:configChanges="keyboard|orientation|keyboardHidden|screenSize"
android:screenOrientation="reverseLandscape"
android:parentActivityName="com.gaspar.slinfilipino.SignLanguageMenu" >
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="com.gaspar.slinfilipino.SignLanguageMenu" />
</activity>
它对我有效。希望对您有所帮助!
我尝试了autremoi的答案,但它杀死了我的UI。我找到了一个有效的答案,但是我发现以下各项混合在一起:https://www.captechconsulting.com/blogs/programmatically-locking-android-screen-orientation
并且此:getSize() giving me errors有效,并且应在所有Android版本上使用。
与setRequestedOrientation(lockOrientation());
一起使用
快乐编码!
private int lockOrientation(){
Display display = getWindowManager().getDefaultDisplay();
int rotation = display.getRotation();
Point size = new Point();
size.x = display.getWidth();
size.y = display.getHeight();
int lock = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;
if (rotation == Surface.ROTATION_0
|| rotation == Surface.ROTATION_180) {
// if rotation is 0 or 180 and width is greater than height, we have
// a tablet
if (size.x > size.y) {
if (rotation == Surface.ROTATION_0) {
lock = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;
} else {
lock = ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE;
}
} else {
// we have a phone
if (rotation == Surface.ROTATION_0) {
lock = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;
} else {
lock = ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT;
}
}
} else {
// if rotation is 90 or 270 and width is greater than height, we
// have a phone
if (size.x > size.y) {
if (rotation == Surface.ROTATION_90) {
lock = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE;
} else {
lock = ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE;
}
} else {
// we have a tablet
if (rotation == Surface.ROTATION_90) {
lock = ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT;
} else {
lock = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;
}
}
}
return lock;
}
嗨,如果您想锁定屏幕方向,则必须设置清单文件
<activity android:configChanges="orientation|keyboardHidden"
android:screenOrientation="portrait" android:name=".activities.HomeActivity"
android:label="@string/app_name" android:theme="@style/Theme.Translucent">
尝试一下
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
如果你想要肖像
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);