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
将以下命令添加到您的项目中,
npm install
npm i react-native-orientation-locker
然后你使用一个manifest类, React_Native(你的项目文件夹)/ android / app / src / main / AndroidManifest.xml:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.payroll_react">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW"/>
<application
android:name=".MainApplication"
android:label="@string/app_name"
android:icon="@mipmap/ic_launcher"
android:allowBackup="false"
android:theme="@style/AppTheme">
<activity
android:name=".MainActivity"
android:label="@string/app_name"
android:screenOrientation="landscape"
android:configChanges="keyboard|keyboardHidden|orientation|screenSize"
android:windowSoftInputMode="adjustResize">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name="com.facebook.react.devsupport.DevSettingsActivity" />
</application>
</manifest>
其他回答
只需在活动标记中添加此属性。
android:screenOrientation="portrait"
在Kotlin中,同样可以使用下面的代码以编程方式实现:
requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT
你可以通过在manifest.xml文件中这样写来强制你的特定活动始终保持纵向模式:
<activity
android:name=".MainActivity"
android:screenOrientation="portrait"></activity>
你也可以通过在你的活动的onCreate()方法中写入下面的行来强制你的活动保持在纵向模式:
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.your_layout);
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
}
在<apphome>/platform/android目录下,创建AndroidManifest.xml(从生成的目录中复制它)。
然后添加android:screenOrientation="portrait"到所有的活动元素。
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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