Android 开发手机屏幕截取并保存到手机相册

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/Mr___Xu/article/details/81508356

public void convertViewToBitmap(View a) {
//用时间来命名文件名
    SimpleDateFormat sdf = new SimpleDateFormat(
            "yyyy-MM-dd_HH-mm-ss", Locale.US);
    String fname = "/sdcard/" + sdf + ".png";
    View view = a.getRootView();
    view.measure(View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED), View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));
    view.layout(0, 0, view.getMeasuredWidth(), view.getMeasuredHeight());
    view.buildDrawingCache();
    Bitmap bitmap = view.getDrawingCache();
    if (bitmap != null) {
        System.out.println("bitmap got!");
        try {
            FileOutputStream out = new FileOutputStream(fname);
            bitmap.compress(Bitmap.CompressFormat.PNG, 100, out);
            saveBmp2Gallery(bitmap,fname);
            ToastShowUtils.show(context, fname, 3);
        } catch (Exception e) {
            e.printStackTrace();
        }
    } else {
        ToastShowUtils.show(context, "asdf", 3);
    }
}

/**
 * @param bmp     获取的bitmap数据
 * @param picName 自定义的图片名
 */
public void saveBmp2Gallery(Bitmap bmp, String picName) {

    String fileName = null;
    //系统相册目录
    String galleryPath = Environment.getExternalStorageDirectory()
            + File.separator + Environment.DIRECTORY_DCIM
            + File.separator + "Camera" + File.separator;


    // 声明文件对象
    File file = null;
    // 声明输出流
    FileOutputStream outStream = null;

    try {
        // 如果有目标文件，直接获得文件对象，否则创建一个以filename为名称的文件
        file = new File(galleryPath, picName + ".jpg");

        // 获得文件相对路径
        fileName = file.toString();
        // 获得输出流，如果文件中有内容，追加内容
        outStream = new FileOutputStream(fileName);
        if (null != outStream) {
            bmp.compress(Bitmap.CompressFormat.PNG, 90, outStream);
        }

    } catch (Exception e) {
        e.getStackTrace();
    } finally {
        try {
            if (outStream != null) {
                outStream.close();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    MediaStore.Images.Media.insertImage(context.getContentResolver(),
            bmp, fileName, null);
    Intent intent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
    Uri uri = Uri.fromFile(file);
    intent.setData(uri);
    context.sendBroadcast(intent);
}