安卓:暂时禁用活动中的方向更改
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26-09-2019 - |
题
我的主要活动有一些代码,这些代码进行了一些不应中断的数据库更改。我正在另一个线程中完成繁重的工作,并使用我设置为不可取消的进度对话框。但是,我注意到,如果我旋转手机,它会重新启动活动,这对于正在运行的进程来说确实很糟糕,并且我得到了强制关闭。
我想要做的是以编程方式禁用屏幕方向更改,直到我的进程完成,此时方向更改将启用。
其他提示
其他答案都不奏效了完美的我,但这里是我发现呢。
锁定方位当前...
if(getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) {
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
} else setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
在改变取向应再次允许,重新设置为默认值...
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);
下面是一个更完整和最新的解决方案,为API 8+作品,对于银河标签上反向纵向和横向,以及作品的作品,其中的“自然”方向是横向(呼叫activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED)
解锁方向):
@SuppressWarnings("deprecation")
@SuppressLint("NewApi")
public static void lockActivityOrientation(Activity activity) {
Display display = activity.getWindowManager().getDefaultDisplay();
int rotation = display.getRotation();
int height;
int width;
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB_MR2) {
height = display.getHeight();
width = display.getWidth();
} else {
Point size = new Point();
display.getSize(size);
height = size.y;
width = size.x;
}
switch (rotation) {
case Surface.ROTATION_90:
if (width > height)
activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
else
activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT);
break;
case Surface.ROTATION_180:
if (height > width)
activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT);
else
activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);
break;
case Surface.ROTATION_270:
if (width > height)
activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);
else
activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
break;
default :
if (height > width)
activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
else
activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
}
}
为了还管理反向取向模式中,我使用的代码来固定活动取向:
int rotation = getWindowManager().getDefaultDisplay().getRotation();
switch(rotation) {
case Surface.ROTATION_180:
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT);
break;
case Surface.ROTATION_270:
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);
break;
case Surface.ROTATION_0:
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
break;
case Surface.ROTATION_90:
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
break;
}
和再次允许取向:
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);
使用setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LOCKED);
为
锁定当前方向无论是横向或纵向。
使用setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_SENSOR);
用于解锁方位。
我找到了答案。为此,您可以在 Activity 中调用 setRequestedOrientation(int)
使用此处指定的值之一: http://developer.android.com/reference/android/R.attr.html#screenOrientation
在我开始我的线程之前我打电话给 setRequestedOrientation(OFF)
(关闭=无传感器)当线程完成时我打电话 setRequestedOrientation(ON)
(开=传感器)。奇迹般有效。
感谢所有。我修改Pilot_51的解决方案,使恢复到以前的状态,相信我。我也扔在改变到支持非景观和非肖像屏幕(但没有测试它在这样的屏幕上)。
prevOrientation = getRequestedOrientation();
if(getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE) {
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
} else if(getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) {
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
} else {
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_NOSENSOR);
}
然后将其还原
setRequestedOrientation(prevOrientation);
protected void setLockScreenOrientation(boolean lock) {
if (Build.VERSION.SDK_INT >= 18) {
setRequestedOrientation(lock?ActivityInfo.SCREEN_ORIENTATION_LOCKED:ActivityInfo.SCREEN_ORIENTATION_FULL_SENSOR);
return;
}
if (lock) {
switch (getWindowManager().getDefaultDisplay().getRotation()) {
case 0: setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT); break; // value 1
case 2: setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT); break; // value 9
case 1: setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); break; // value 0
case 3: setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE); break; // value 8
}
} else
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_FULL_SENSOR); // value 10
}
下面是其中每次和蜜饯当前取向工作的解决方案(使用Activity.Info.SCREEN_ORIENTATION_PORTRAIT
套至0℃,例如,但用户可以有一个180°的方位作为当前的一个)。
// Scope: Activity
private void _lockOrientation() {
if (super.getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) {
super.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_USER_PORTRAIT);
} else {
super.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_USER_LANDSCAPE);
}
}
private void _unlockOrientation() {
super.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);
}
使用ActivityInfo.SCREEN_ORIENTATION_USER
如果要旋转屏幕只有当它在设备上启用。
这知府的作品对我来说。它解决了与片剂/电话的不同的“自然取向”的问题;)
int rotation = getWindowManager().getDefaultDisplay().getRotation();
Configuration config = getResources().getConfiguration();
int naturalOrientation;
if (((rotation == Surface.ROTATION_0 || rotation == Surface.ROTATION_180) &&
config.orientation == Configuration.ORIENTATION_LANDSCAPE)
|| ((rotation == Surface.ROTATION_90 || rotation == Surface.ROTATION_270) &&
config.orientation == Configuration.ORIENTATION_PORTRAIT)) {
naturalOrientation = Configuration.ORIENTATION_LANDSCAPE;
} else {
naturalOrientation = Configuration.ORIENTATION_PORTRAIT;
}
// because getRotation() gives "rotation from natural orientation" of device (different on phone and tablet)
// we need to update rotation variable if natural orienation isn't 0 (mainly tablets)
if (naturalOrientation == Configuration.ORIENTATION_LANDSCAPE)
rotation = ++rotation % 4;
switch (rotation) {
case Surface.ROTATION_0: //0
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
break;
case Surface.ROTATION_90: //1
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
break;
case Surface.ROTATION_180: //2
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT);
break;
case Surface.ROTATION_270: //3
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);
break;
}
} else {
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);
}
我已经提出了依赖于显示器转动,然后决定该装置的取向的溶液。从知道方向,我们可以锁定方向,需要时以后释放。该解决方案还可以确定该设备中的反向景观强>模式。
private void lockOrientation(){
switch (((WindowManager) getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay().getRotation()) {
// Portrait
case Surface.ROTATION_0:
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
break;
//Landscape
case Surface.ROTATION_90:
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
break;
// Reversed landscape
case Surface.ROTATION_270:
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);
break;
}
}
再后来,如果我们需要释放取向我们可以调用此方法:
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);
我觉得这个代码是更容易阅读。
private void keepOrientation() {
int orientation = getResources().getConfiguration().orientation;
int rotation = getWindowManager().getDefaultDisplay().getRotation();
switch (rotation) {
case Surface.ROTATION_0:
if (orientation == Configuration.ORIENTATION_PORTRAIT) {
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
} else {
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
}
break;
case Surface.ROTATION_90:
if (orientation == Configuration.ORIENTATION_PORTRAIT) {
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT);
} else {
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
}
break;
case Surface.ROTATION_180:
if (orientation == Configuration.ORIENTATION_PORTRAIT) {
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT);
} else {
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);
}
break;
default:
if (orientation == Configuration.ORIENTATION_PORTRAIT) {
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
} else {
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);
}
}
}
我发现的现有的旋转/需要取向值以覆盖四种可能性的组合;还有的纵向/横向值和设备的自然方向。比方说,设备的自然方向将具有0度的旋转值时,屏幕是它的‘自然’纵向或横向。类似地,将有90度的旋转值时,它的在横向或纵向(通知它的相对取向的@ 0度)。所以这是不为0度或90度将意味着“反”的方向旋转值。好吧,这里是一些代码:
public enum eScreenOrientation
{
PORTRAIT (ActivityInfo.SCREEN_ORIENTATION_PORTRAIT),
LANDSCAPE (ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE),
PORTRAIT_REVERSE (ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT),
LANDSCAPE_REVERSE (ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE),
UNSPECIFIED_ORIENTATION (ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);
public final int activityInfoValue;
eScreenOrientation ( int orientation )
{
activityInfoValue = orientation;
}
}
public eScreenOrientation currentScreenOrientation ( )
{
final int rotation = ((WindowManager) getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay().getRotation();
final int orientation = getResources().getConfiguration().orientation;
switch ( orientation )
{
case Configuration.ORIENTATION_PORTRAIT:
if ( rotation == Surface.ROTATION_0 || rotation == Surface.ROTATION_90 )
return eScreenOrientation.PORTRAIT;
else
return eScreenOrientation.PORTRAIT_REVERSE;
case Configuration.ORIENTATION_LANDSCAPE:
if ( rotation == Surface.ROTATION_0 || rotation == Surface.ROTATION_90 )
return eScreenOrientation.LANDSCAPE;
else
return eScreenOrientation.LANDSCAPE_REVERSE;
default:
return eScreenOrientation.UNSPECIFIED_ORIENTATION;
}
}
public void lockScreenOrientation ( )
throws UnsupportedDisplayException
{
eScreenOrientation currentOrientation = currentScreenOrientation( );
if ( currentOrientation == eScreenOrientation.UNSPECIFIED_ORIENTATION )
throw new UnsupportedDisplayException("Unable to lock screen - unspecified orientation");
else
setRequestedOrientation( currentOrientation.activityInfoValue );
}
public void unlockScreenOrientation ( )
{
setRequestedOrientation( ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED );
}
我不喜欢这里的大部分答案,因为在解锁他们将其设置为不定的,而不是以前的状态。 ProjectJourneyman没有考虑到这一点,这是伟大的,但我罗伊首选锁定代码。所以,我的建议是两者的混合:
private int prevOrientation = ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED;
private void unlockOrientation() {
setRequestedOrientation(prevOrientation);
}
@SuppressWarnings("deprecation")
@SuppressLint("NewApi")
private void lockOrientation() {
prevOrientation = getRequestedOrientation();
Display display = getWindowManager().getDefaultDisplay();
int rotation = display.getRotation();
int height;
int width;
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB_MR2) {
height = display.getHeight();
width = display.getWidth();
} else {
Point size = new Point();
display.getSize(size);
height = size.y;
width = size.x;
}
switch (rotation) {
case Surface.ROTATION_90:
if (width > height)
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
else
setRequestedOrientation(9/* reversePortait */);
break;
case Surface.ROTATION_180:
if (height > width)
setRequestedOrientation(9/* reversePortait */);
else
setRequestedOrientation(8/* reverseLandscape */);
break;
case Surface.ROTATION_270:
if (width > height)
setRequestedOrientation(8/* reverseLandscape */);
else
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
break;
default :
if (height > width)
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
else
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
}
}
可以使用
public void swapOrientaionLockState(){
try{
if (Settings.System.getInt(mContext.getContentResolver(), Settings.System.ACCELEROMETER_ROTATION) == 1) {
Display defaultDisplay = ((WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
Settings.System.putInt(mContext.getContentResolver(), Settings.System.USER_ROTATION, defaultDisplay.getRotation());
Settings.System.putInt(mContext.getContentResolver(), Settings.System.ACCELEROMETER_ROTATION, 0);
} else {
Settings.System.putInt(mContext.getContentResolver(), Settings.System.ACCELEROMETER_ROTATION, 1);
}
Settings.System.putInt(mContext.getContentResolver(), Settings.System.ACCELEROMETER_ROTATION, !orientationIsLocked() ? 1 : 0);
} catch (Settings.SettingNotFoundException e){
e.printStackTrace();
}
}
public boolean orientationIsLocked(){
if(canModifiSetting(mContext)){
try {
return Settings.System.getInt(mContext.getContentResolver(), Settings.System.ACCELEROMETER_ROTATION) == 0;
} catch (Settings.SettingNotFoundException e) {
e.printStackTrace();
}
}
return false;
}
public static boolean canModifiSetting(Context context){
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
return Settings.System.canWrite(context);
} else {
return true;
}
}
使用该代码行
this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
在您的活动onCreate方法