Android-截屏

两种方法:

1. 普通api截屏
   只能截取当前软件的视图范围, 如果有分屏操作, 就不好
2. 系统命令截屏
   即使分屏, 也可以截取整屏

普通截屏:

    // 截屏
    public static Bitmap screenshotView(View view) {
        // view.setDrawingCacheEnabled(true); // 设置缓存，可用于实时截图
        Bitmap bitmap = Bitmap.createBitmap(view.getWidth(), view.getHeight(), Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(bitmap);
        view.draw(canvas);
        // view.setDrawingCacheEnabled(false); // 清空缓存，可用于实时截图
        return bitmap;
    }

    // 位图转 Byte
    private static byte[] getBitmapByte(Bitmap bitmap){
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        // 参数1转换类型，参数2压缩质量，参数3字节流资源
        bitmap.compress(Bitmap.CompressFormat.PNG, 100, out);
        try {
            out.flush();
            out.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return out.toByteArray();
    }

    /*
        存本地
    */
    public static void save(Context context, String filePath, String fileName, Bitmap bmp) {
        if (bmp == null) return;

        // 首先保存图片
        File appDir = new File(filePath);
        if (!appDir.exists()) {
            appDir.mkdir();
        }
        File file = new File(appDir, fileName);
        try {
            FileOutputStream fos = new FileOutputStream(file);
            bmp.compress(Bitmap.CompressFormat.JPEG, 100, fos);
            fos.flush();
            fos.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }


        // 把文件插入到系统图库
//        try {
//            MediaStore.Images.Media.insertImage(context.getContentResolver(),
//                    file.getAbsolutePath(), fileName, null);
//        } catch (FileNotFoundException e) {
//            e.printStackTrace();
//        }
//        // 最后通知图库更新
//        context.sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.parse("file://" + file.getPath())));

    }

系统命令截屏

// 调用 
GpioUtil.exeCommand("screencap /sdcard/`date +%Y-%m-%d`.png", true)


/*
 *   系统截屏命令
 *
 * */
public static void exeCommand(String cmd, boolean isRoot) {
        if (TextUtils.isEmpty(cmd)) {
            return null;
        }
        //StringBuilder result = new StringBuilder();
        DataOutputStream dos = null;
        DataInputStream dis = null;
        Process p = null;
        try {
            if (isRoot) {
                p = Runtime.getRuntime().exec("su");
            } else {
                p = Runtime.getRuntime().exec("sh");
            }

            dos = new DataOutputStream(p.getOutputStream());
            dis = new DataInputStream(p.getInputStream());
            dos.writeBytes(cmd + "\n");
            dos.flush();
            dos.writeBytes("exit\n");
            dos.flush();
//            String line = null;
//            while ((line = dis.readLine()) != null) {
//                Log.d(TAG,"line="+line);
//                result.append(line);
//            }
            p.waitFor();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (dos != null) {
                try {
                    dos.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            if (dis != null) {
                try {
                    dis.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        //return result.toString();
    }