Android刘海屏、水滴屏全面屏适配小结

 <!-- Render on full screen up to screen aspect ratio of 2.4 -->
 <!-- Use a letterbox on screens larger than 2.4 -->
 <meta-data android:name="android.max_aspect" android:value="2.4" />

android:resizeableActivity=["true" | "false"]

// 延伸显示区域到刘海
 WindowManager.LayoutParams lp = window.getAttributes();
 lp.layoutInDisplayCutoutMode = WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_SHORT_EDGES;
 window.setAttributes(lp);
 // 设置页面全屏显示
 final View decorView = window.getDecorView();
 decorView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_LAYOUT_STABLE);

 <?xml version="1.0" encoding="utf-8"?>
 <resources>
  <style name="AppTheme" parent="xxx">
   <item name="android:windowLayoutInDisplayCutoutMode">shortEdges</item>
  </style>
 </resources>

<meta-data android:name="android.notch_support" android:value="true"/>

<application
  android:allowBackup="true"
  android:icon="@mipmap/ic_launcher"
  android:label="@string/app_name"
  android:roundIcon="@mipmap/ic_launcher_round"
  android:testOnly="false"
  android:supportsRtl="true"
  android:theme="@style/AppTheme">
  <meta-data android:name="android.notch_support" android:value="true"/>
  <activity android:name=".MainActivity">
   <intent-filter>
    <action android:name="android.intent.action.MAIN"/>
    <category android:name="android.intent.category.LAUNCHER"/>
   </intent-filter>
 </activity>

<application
  android:allowBackup="true"
  android:icon="@mipmap/ic_launcher"
  android:label="@string/app_name"
  android:roundIcon="@mipmap/ic_launcher_round"
  android:testOnly="false"
  android:supportsRtl="true"
  android:theme="@style/AppTheme">
  <activity android:name=".MainActivity">
   <intent-filter>
    <action android:name="android.intent.action.MAIN"/>
 
    <category android:name="android.intent.category.LAUNCHER"/>
   </intent-filter>
  </activity>
  <activity android:name=".LandscapeFullScreenActivity" android:screenOrientation="sensor">
  </activity>
  <activity android:name=".FullScreenActivity">
   <meta-data android:name="android.notch_support" android:value="true"/>
  </activity>
 </application>

/*刘海屏全屏显示FLAG*/
 public static final int FLAG_NOTCH_SUPPORT=0x00010000;
 /**
 * 设置应用窗口在华为刘海屏手机使用刘海区
 * @param window 应用页面window对象
 */
 public static void setFullScreenWindowLayoutInDisplayCutout(Window window) {
  if (window == null) {
   return;
  }
  WindowManager.LayoutParams layoutParams = window.getAttributes();
  try {
   Class layoutParamsExCls = Class.forName("com.huawei.android.view.LayoutParamsEx");
   Constructor con=layoutParamsExCls.getConstructor(LayoutParams.class);
   Object layoutParamsExObj=con.newInstance(layoutParams);
   Method method=layoutParamsExCls.getMethod("addHwFlags", int.class);
   method.invoke(layoutParamsExObj, FLAG_NOTCH_SUPPORT);
  } catch (ClassNotFoundException | NoSuchMethodException | IllegalAccessException |InstantiationException 
  | InvocationTargetException e) {
   Log.e("test", "hw add notch screen flag api error");
  } catch (Exception e) {
   Log.e("test", "other Exception");
  }
 }

 public static void setNotFullScreenWindowLayoutInDisplayCutout (Window window) {
  if (window == null) {
   return;
  }
  WindowManager.LayoutParams layoutParams = window.getAttributes();
  try {
   Class layoutParamsExCls = Class.forName("com.huawei.android.view.LayoutParamsEx");
   Constructor con=layoutParamsExCls.getConstructor(LayoutParams.class);
   Object layoutParamsExObj=con.newInstance(layoutParams);
   Method method=layoutParamsExCls.getMethod("clearHwFlags", int.class);
   method.invoke(layoutParamsExObj, FLAG_NOTCH_SUPPORT);
  } catch (ClassNotFoundException | NoSuchMethodException | IllegalAccessException |InstantiationException 
  | InvocationTargetException e) {
   Log.e("test", "hw clear notch screen flag api error");
  } catch (Exception e) {
   Log.e("test", "other Exception");
  }
 }

 private static boolean isNotch() {
  try {
   Method getInt = Class.forName("android.os.SystemProperties").getMethod("getInt", String.class, int.class);
   int notch = (int) getInt.invoke(null, "ro.miui.notch", 0);
   return notch == 1;
  } catch (Throwable ignore) {
  }
  return false;
 }

@Override
 public void setDisplayInNotch(Activity activity) {
  int flag = 0x00000100 | 0x00000200 | 0x00000400;
  try {
   Method method = Window.class.getMethod("addExtraFlags",
     int.class);
   method.invoke(activity.getWindow(), flag);
  } catch (Exception ignore) {
  }
 }

public static int getNotchHeight(Context context) {
  int resourceId = context.getResources().getIdentifier("notch_height", "dimen", "android");
  if (resourceId > 0) {
   return context.getResources().getDimensionPixelSize(resourceId);
  }
  return 0;
 }

 public static int getNotchWidth(Context context) {
  int resourceId = context.getResources().getIdentifier("notch_width", "dimen", "android");
  if (resourceId > 0) {
   return context.getResources().getDimensionPixelSize(resourceId);
  }
  return 0;
 }

@Override
 public boolean hasNotch(Activity activity) {
  boolean ret = false;
  try {
   ret = activity.getPackageManager().hasSystemFeature("com.oppo.feature.screen.heteromorphism");
  } catch (Throwable ignore) {
  }
  return ret;
 }

private static String getScreenValue() {
  String value = "";
  Class<?> cls;
  try {
   cls = Class.forName("android.os.SystemProperties");
   Method get = cls.getMethod("get", String.class);
   Object object = cls.newInstance();
   value = (String) get.invoke(object, "ro.oppo.screen.heteromorphism");
  } catch (Throwable ignore) {
  }
  return value;
 }