在开发中,经常会用到屏幕相关的操作,比如,获取屏幕宽高、屏幕密度、截取屏幕、全屏、横竖屏切换等等,因此,在这稍加整理以下内容
获取屏幕宽度
public static int getScreenWidth() {
WindowManager wm = (WindowManager) Utils.getApp().getSystemService(Context.WINDOW_SERVICE);
if (wm == null) {
return Utils.getApp().getResources().getDisplayMetrics().widthPixels;
}
Point point = new Point();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
wm.getDefaultDisplay().getRealSize(point);
} else {
wm.getDefaultDisplay().getSize(point);
}
return point.x;
}
获取屏幕高度
public static int getScreenHeight() {
WindowManager wm = (WindowManager) Utils.getApp().getSystemService(Context.WINDOW_SERVICE);
if (wm == null) {
return Utils.getApp().getResources().getDisplayMetrics().heightPixels;
}
Point point = new Point();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
wm.getDefaultDisplay().getRealSize(point);
} else {
wm.getDefaultDisplay().getSize(point);
}
return point.y;
}
获取屏幕密度
public static float getScreenDensity() {
return Utils.getApp().getResources().getDisplayMetrics().density;
}
设置全屏
public static void setFullScreen(@NonNull final Activity activity) {
activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN
| WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS);
}
设置竖屏
public static void setLandscape(@NonNull final Activity activity) {
activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
}
设置横屏
public static void setPortrait(@NonNull final Activity activity) {
activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
}
是否竖屏
public static boolean isLandscape() {
return Utils.getApp().getResources().getConfiguration().orientation
== Configuration.ORIENTATION_LANDSCAPE;
}
是否横屏
public static boolean isPortrait() {
return Utils.getApp().getResources().getConfiguration().orientation
== Configuration.ORIENTATION_PORTRAIT;
}
截取屏幕
public static Bitmap screenShot(@NonNull final Activity activity, boolean isDeleteStatusBar) {
View decorView = activity.getWindow().getDecorView();
decorView.setDrawingCacheEnabled(true);
decorView.buildDrawingCache();
Bitmap bmp = decorView.getDrawingCache();
DisplayMetrics dm = new DisplayMetrics();
activity.getWindowManager().getDefaultDisplay().getMetrics(dm);
Bitmap ret;
if (isDeleteStatusBar) {
Resources resources = activity.getResources();
int resourceId = resources.getIdentifier("status_bar_height", "dimen", "android");
int statusBarHeight = resources.getDimensionPixelSize(resourceId);
ret = Bitmap.createBitmap(
bmp,
0,
statusBarHeight,
dm.widthPixels,
dm.heightPixels - statusBarHeight
);
} else {
ret = Bitmap.createBitmap(bmp, 0, 0, dm.widthPixels, dm.heightPixels);
}
decorView.destroyDrawingCache();
return ret;
}
是否锁屏
public static boolean isScreenLock() {
KeyguardManager km =
(KeyguardManager) Utils.getApp().getSystemService(Context.KEYGUARD_SERVICE);
return km != null && km.inKeyguardRestrictedInputMode();
}