发表于 更新于 分类于 Changyan：

一.代码位置

二.引用

  1. 将JitPack存储库添加到您的构建文件中
    将其添加到存储库末尾的root build.gradle中：

    1
    2
    3
    4
    5
    6
    allprojects {
          repositories {
          ...
          maven { url 'https://jitpack.io' }
          }
    }

  2. 添加依赖项

    1
    2
    3
    4
    dependencies {
          ...
          implementation 'com.github.itemuse:XLib:Tag'
    }

  3. 初始化 Application中init

    1
    2
    3
    4
    5
    6
    7
    import cn.xy.library.XApp;
          ...
    @Override
    public void onCreate() {
          super.onCreate();
          XApp.init(this);
    }

  4. AndroidManifest.xml中添加弹出界面的activity

    1
    2
    <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW"/>
    <uses-permission android:name="android.permission.WRITE_SETTINGS"

三.几个API示例

  • 获取屏幕的宽度/高度

XScreen.class

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
/**
   * Return the width of screen, in pixel.
   *
   * @return the width of screen, in pixel
   */
  public static int getScreenWidth() {
      WindowManager wm = (WindowManager) getApp().getSystemService(Context.WINDOW_SERVICE);
      if (wm == null) return -1;
      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;
  }

  /**
   * Return the height of screen, in pixel.
   *
   * @return the height of screen, in pixel
   */
  public static int getScreenHeight() {
      WindowManager wm = (WindowManager) getApp().getSystemService(Context.WINDOW_SERVICE);
      if (wm == null) return -1;
      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;
  }

  • 获取应用屏幕的宽度/高度

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
/**
   * Return the application's width of screen, in pixel.
   *
   * @return the application's width of screen, in pixel
   */
  public static int getAppScreenWidth() {
      WindowManager wm = (WindowManager) getApp().getSystemService(Context.WINDOW_SERVICE);
      if (wm == null) return -1;
      Point point = new Point();
      wm.getDefaultDisplay().getSize(point);
      return point.x;
  }

  /**
   * Return the application's height of screen, in pixel.
   *
   * @return the application's height of screen, in pixel
   */
  public static int getAppScreenHeight() {
      WindowManager wm = (WindowManager) getApp().getSystemService(Context.WINDOW_SERVICE);
      if (wm == null) return -1;
      Point point = new Point();
      wm.getDefaultDisplay().getSize(point);
      return point.y;
  }

  • 获取屏幕密度/DPI

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
/**
   * Return the density of screen.
   *
   * @return the density of screen
   */
  public static float getScreenDensity() {
      return Resources.getSystem().getDisplayMetrics().density;
  }

  /**
   * Return the screen density expressed as dots-per-inch.
   *
   * @return the screen density expressed as dots-per-inch
   */
  public static int getScreenDensityDpi() {
      return Resources.getSystem().getDisplayMetrics().densityDpi;
  }

  • 设置屏幕为全屏/非全屏

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35

/**
 * Set non full screen.
 *
 * @param activity The activity.
 */
public static void setNonFullScreen(@NonNull final Activity activity) {
    activity.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
}

/**
 * Toggle full screen.
 *
 * @param activity The activity.
 */
public static void toggleFullScreen(@NonNull final Activity activity) {
    boolean isFullScreen = isFullScreen(activity);
    Window window = activity.getWindow();
    if (isFullScreen) {
        window.clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
    } else {
        window.addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
    }
}

/**
 * Return whether screen is full.
 *
 * @param activity The activity.
 * @return {@code true}: yes<br>{@code false}: no
 */
public static boolean isFullScreen(@NonNull final Activity activity) {
    int fullScreenFlag = WindowManager.LayoutParams.FLAG_FULLSCREEN;
    return (activity.getWindow().getAttributes().flags & fullScreenFlag) == fullScreenFlag;
}

  • 设置屏幕为横屏/竖屏

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
/**
   * Set the screen to landscape.
   *
   * @param activity The activity.
   */
  @SuppressLint("SourceLockedOrientationActivity")
  public static void setLandscape(@NonNull final Activity activity) {
      activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
  }

  /**
   * Set the screen to portrait.
   *
   * @param activity The activity.
   */
  @SuppressLint("SourceLockedOrientationActivity")
  public static void setPortrait(@NonNull final Activity activity) {
      activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
  }

    /**
   * Return whether screen is landscape.
   *
   * @return {@code true}: yes<br>{@code false}: no
   */
  public static boolean isLandscape() {
      return getApp().getResources().getConfiguration().orientation
              == Configuration.ORIENTATION_LANDSCAPE;
  }

  /**
   * Return whether screen is portrait.
   *
   * @return {@code true}: yes<br>{@code false}: no
   */
  public static boolean isPortrait() {
      return getApp().getResources().getConfiguration().orientation
              == Configuration.ORIENTATION_PORTRAIT;
  }

  /**
   * Return the rotation of screen.
   *
   * @param activity The activity.
   * @return the rotation of screen
   */
  public static int getScreenRotation(@NonNull final Activity activity) {
      switch (activity.getWindowManager().getDefaultDisplay().getRotation()) {
          case Surface.ROTATION_0:
              return 0;
          case Surface.ROTATION_90:
              return 90;
          case Surface.ROTATION_180:
              return 180;
          case Surface.ROTATION_270:
              return 270;
          default:
              return 0;
      }
  }


  • 截屏

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
/**
   * Return the bitmap of screen.
   *
   * @param activity The activity.
   * @return the bitmap of screen
   */
  public static Bitmap screenShot(@NonNull final Activity activity) {
      return screenShot(activity, false);
  }

  /**
   * Return the bitmap of screen.
   *
   * @param activity          The activity.
   * @param isDeleteStatusBar True to delete status bar, false otherwise.
   * @return the bitmap of screen
   */
  public static Bitmap screenShot(@NonNull final Activity activity, boolean isDeleteStatusBar) {
      View decorView = activity.getWindow().getDecorView();
      Bitmap bmp = view2Bitmap(decorView);
      DisplayMetrics dm = new DisplayMetrics();
      activity.getWindowManager().getDefaultDisplay().getMetrics(dm);
      if (isDeleteStatusBar) {
          int statusBarHeight = XSystemUI.getStatusBarHeight();
          return Bitmap.createBitmap(
                  bmp,
                  0,
                  statusBarHeight,
                  dm.widthPixels,
                  dm.heightPixels - statusBarHeight
          );
      } else {
          return Bitmap.createBitmap(bmp, 0, 0, dm.widthPixels, dm.heightPixels);
      }
  }

  • 休眠

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
/**
 * Set the duration of sleep.
 * <p>Must hold {@code <uses-permission android:name="android.permission.WRITE_SETTINGS" />}</p>
 *
 * @param duration The duration.
 */
@RequiresPermission(WRITE_SETTINGS)
public static void setSleepDuration(final int duration) {
    Settings.System.putInt(
            getApp().getContentResolver(),
            Settings.System.SCREEN_OFF_TIMEOUT,
            duration
    );
}

/**
 * Return the duration of sleep.
 *
 * @return the duration of sleep.
 */
public static int getSleepDuration() {
    try {
        return Settings.System.getInt(
                getApp().getContentResolver(),
                Settings.System.SCREEN_OFF_TIMEOUT
        );
    } catch (Settings.SettingNotFoundException e) {
        e.printStackTrace();
        return -123;
    }
}

4. 测试效果