调用这个方法，传入你想要屏幕截图的最外层ViewGroup:

public Bitmap screenShot(View view) {
    Bitmap bitmap = Bitmap.createBitmap(view.getWidth(),
            view.getHeight(), Config.ARGB_8888);
    Canvas canvas = new Canvas(bitmap);
    view.draw(canvas);
    return bitmap;
}

根据上面@JustinMorris和@NiravDangi的回答https://stackoverflow.com/a/8504958/2232148，我们必须把一个视图的背景和前景像这样组合起来:

public static Bitmap takeScreenshot(View view, Bitmap.Config quality) {
    Bitmap bitmap = Bitmap.createBitmap(view.getWidth(), view.getHeight(), quality);
    Canvas canvas = new Canvas(bitmap);

    Drawable backgroundDrawable = view.getBackground();
    if (backgroundDrawable != null) {
        backgroundDrawable.draw(canvas);
    } else {
        canvas.drawColor(Color.WHITE);
    }
    view.draw(canvas);

    return bitmap;
}

质量参数取一个常数Bitmap。Config，通常是Bitmap.Config。RGB_565或Bitmap.Config.ARGB_8888。

下面是允许我的截图存储在SD卡上的代码，以后无论你需要什么都可以使用:

首先，你需要添加一个适当的权限来保存文件:

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

这是代码(运行在一个活动中):

private void takeScreenshot() {
    Date now = new Date();
    android.text.format.DateFormat.format("yyyy-MM-dd_hh:mm:ss", now);

    try {
        // image naming and path  to include sd card  appending name you choose for file
        String mPath = Environment.getExternalStorageDirectory().toString() + "/" + now + ".jpg";

        // create bitmap screen capture
        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.JPEG, quality, outputStream);
        outputStream.flush();
        outputStream.close();

        openScreenshot(imageFile);
    } catch (Throwable e) {
        // Several error may come out with file handling or DOM
        e.printStackTrace();
    }
}

这是你如何打开最近生成的图像:

private void openScreenshot(File imageFile) {
    Intent intent = new Intent();
    intent.setAction(Intent.ACTION_VIEW);
    Uri uri = Uri.fromFile(imageFile);
    intent.setDataAndType(uri, "image/*");
    startActivity(intent);
}

如果你想在片段视图上使用这个，那么使用:

View v1 = getActivity().getWindow().getDecorView().getRootView();

而不是

View v1 = getWindow().getDecorView().getRootView();

on takeScreenshot()函数

注意:

如果对话框包含一个表面视图，这个解决方案就不起作用。详情请查看以下问题的答案:

Android界面截图显示黑屏

你可以尝试这样做，

从布局或视图中获取位图缓存 首先你需要setDrawingCacheEnabled到一个布局(线性布局或相对布局，或视图)

然后

Bitmap bm = layout.getDrawingCache()

然后对位图做任何你想做的事情。要么将其转换为图像文件，要么将位图的uri发送到其他地方。

如果你想从片段中截取截图，请遵循以下步骤:

Override onCreateView(): @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { // Inflate the layout for this fragment View view = inflater.inflate(R.layout.fragment_one, container, false); mView = view; } Logic for taking screenshot: button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { View view = mView.findViewById(R.id.scrollView1); shareScreenShotM(view, (NestedScrollView) view); } method shareScreenShotM)(): public void shareScreenShotM(View view, NestedScrollView scrollView){ bm = takeScreenShot(view,scrollView); //method to take screenshot File file = savePic(bm); // method to save screenshot in phone. } method takeScreenShot(): public Bitmap takeScreenShot(View u, NestedScrollView z){ u.setDrawingCacheEnabled(true); int totalHeight = z.getChildAt(0).getHeight(); int totalWidth = z.getChildAt(0).getWidth(); Log.d("yoheight",""+ totalHeight); Log.d("yowidth",""+ totalWidth); u.layout(0, 0, totalWidth, totalHeight); u.buildDrawingCache(); Bitmap b = Bitmap.createBitmap(u.getDrawingCache()); u.setDrawingCacheEnabled(false); u.destroyDrawingCache(); return b; } method savePic(): public static File savePic(Bitmap bm){ ByteArrayOutputStream bytes = new ByteArrayOutputStream(); bm.compress(Bitmap.CompressFormat.JPEG, 100, bytes); File sdCardDirectory = new File(Environment.getExternalStorageDirectory() + "/Foldername"); if (!sdCardDirectory.exists()) { sdCardDirectory.mkdirs(); } // File file = new File(dir, fileName); try { file = new File(sdCardDirectory, Calendar.getInstance() .getTimeInMillis() + ".jpg"); file.createNewFile(); new FileOutputStream(file).write(bytes.toByteArray()); Log.d("Fabsolute", "File Saved::--->" + file.getAbsolutePath()); Log.d("Sabsolute", "File Saved::--->" + sdCardDirectory.getAbsolutePath()); } catch (IOException e) { e.printStackTrace(); } return file; }

对于activity，您可以简单地使用View v1 = getWindow().getDecorView().getRootView();而不是mView

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。