科特林

    private fun screenShot() {
          try {
            val mPath: String = this.getExternalFilesDir(null).getAbsolutePath()
              .toString() + "/temp" + ".png" 
            // create bitmap screenshot
            val v1: View = getWindow().getDecorView().getRootView()
            v1.isDrawingCacheEnabled = true
            val bitmap = Bitmap.createBitmap(v1.drawingCache)
            v1.isDrawingCacheEnabled = false
            val imageFile = File(mPath)
            val outputStream = FileOutputStream(imageFile)
            val quality = 100
            bitmap.compress(Bitmap.CompressFormat.PNG, quality, outputStream)
            outputStream.flush()
            outputStream.close()
        
            //or you can share to test the method fast
            val uriPath =
              FileProvider.getUriForFile(this, getPackageName() + ".sharing.provider", imageFile)
            val intent = Intent(Intent.ACTION_SEND)
            intent.type = "image/*"
            intent.clipData = ClipData.newRawUri("", uriPath)
            intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION)
            intent.putExtra(Intent.EXTRA_STREAM, uriPath)
            startActivity(Intent.createChooser(intent, "Sharing to..."))
          } catch (e: Throwable) {
            e.printStackTrace()
          }
        }

Java

  private void screenShot() {
    try {
      String mPath = this.getExternalFilesDir(null).getAbsolutePath().toString() + "/temp" + ".png";
      // create bitmap screenshot
      View v1 = getWindow().getDecorView().getRootView();
      v1.setDrawingCacheEnabled(true);
      Bitmap bitmap = Bitmap.createBitmap(v1.getDrawingCache());
      v1.setDrawingCacheEnabled(false);

      File imageFile = new File(mPath);
      FileOutputStream outputStream = new FileOutputStream(imageFile);
      int quality = 100;
      bitmap.compress(Bitmap.CompressFormat.PNG, quality, outputStream);
      outputStream.flush();
      outputStream.close();

      //or you can share to test the method fast

      Uri uriPath = FileProvider.getUriForFile(this, getPackageName() + ".sharing.provider", imageFile);
      Intent intent = new Intent(Intent.ACTION_SEND);
      intent.setType("image/*");
      intent.setClipData(ClipData.newRawUri("", uriPath));
      intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
      intent.putExtra(Intent.EXTRA_STREAM, uriPath);
      startActivity(Intent.createChooser(intent, "Sharing to..."));

    } catch (Throwable e) {
      e.printStackTrace();
    }
  }

在android中截取视图的截图。

public static Bitmap getViewBitmap(View v) {
    v.clearFocus();
    v.setPressed(false);

    boolean willNotCache = v.willNotCacheDrawing();
    v.setWillNotCacheDrawing(false);

    int color = v.getDrawingCacheBackgroundColor();
    v.setDrawingCacheBackgroundColor(0);

    if (color != 0) {
        v.destroyDrawingCache();
    }
    v.buildDrawingCache();
    Bitmap cacheBitmap = v.getDrawingCache();
    if (cacheBitmap == null) {
        return null;
    }

    Bitmap bitmap = Bitmap.createBitmap(cacheBitmap);

    v.destroyDrawingCache();
    v.setWillNotCacheDrawing(willNotCache);
    v.setDrawingCacheBackgroundColor(color);

    return bitmap;
}

对于那些想要捕获GLSurfaceView的人，getDrawingCache或绘制到画布方法将不起作用。

在帧呈现之后，您必须读取OpenGL帧缓冲区的内容。这里有一个很好的答案

从Android 11 (API级别30)，你可以用辅助服务截屏:

takeScreenshot -截取指定显示的屏幕截图，并通过AccessibilityService.ScreenshotResult返回。

仅限系统应用!

Process process;
process = Runtime.getRuntime().exec("screencap -p " + outputPath);
process.waitFor();

注意:系统应用不需要执行“su”命令执行该命令。

注:仅适用于root phone

编程方式:adb shell /system/bin/screencap -p /sdcard/img.png

Process sh = Runtime.getRuntime().exec("su", null,null);
OutputStream os = sh.getOutputStream();
os.write(("/system/bin/screencap -p " + "/sdcard/img.png").getBytes("ASCII"));
os.flush();
os.close();
sh.waitFor();    

然后将img.png读取为位图，并按照您的意愿使用。