安卓android|安卓android Q(10)截屏截图监听适配 ContentObserver

目前主流的截屏监听使用的是ContentObserver
添加权限


写好工具类
public class ScreenShot { private static final String TAG = "ScreenShot"; private static final String[] MEDIA_PROJECTIONS = { MediaStore.Images.ImageColumns.DATA, MediaStore.Images.ImageColumns.DATE_TAKEN, MediaStore.Images.ImageColumns.DATE_ADDED }; /** * 截屏依据中的路径判断关键字 */ private static final String[] KEYWORDS = { "screenshot", "screen_shot", "screen-shot", "screen shot", "screencapture", "screen_capture", "screen-capture", "screen capture", "screencap", "screen_cap", "screen-cap", "screen cap" }; private ContentResolver mContentResolver; private CallbackListener mCallbackListener; private MediaContentObserver mInternalObserver; private MediaContentObserver mExternalObserver; private static ScreenShot mInstance; private ScreenShot() { }/** * 获取 ScreenShot 对象 * * @return ScreenShot对象 */ public static ScreenShot getInstance() { if (mInstance == null) { synchronized (ScreenShot.class) { mInstance = new ScreenShot(); } } return mInstance; }/** * 注册 * * @param context上下文 * @param callbackListener 回调监听 */ public void register(Context context, CallbackListener callbackListener) { mContentResolver = context.getContentResolver(); mCallbackListener = callbackListener; HandlerThread handlerThread = new HandlerThread(TAG); handlerThread.start(); Handler handler = new Handler(handlerThread.getLooper()); mInternalObserver = new MediaContentObserver(MediaStore.Images.Media.INTERNAL_CONTENT_URI, handler); mExternalObserver = new MediaContentObserver(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, handler); mContentResolver.registerContentObserver(MediaStore.Images.Media.INTERNAL_CONTENT_URI, false, mInternalObserver); mContentResolver.registerContentObserver(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, false, mExternalObserver); }/** * 注销 */ public void unregister() { if (mContentResolver != null) { mContentResolver.unregisterContentObserver(mInternalObserver); mContentResolver.unregisterContentObserver(mExternalObserver); } }private void handleMediaContentChange(Uri uri) { Cursor cursor = null; try { // 数据改变时,查询数据库中最后加入的一条数据 cursor = mContentResolver.query(uri, MEDIA_PROJECTIONS, null, null, MediaStore.Images.ImageColumns.DATE_ADDED + " desc limit 1"); if (cursor == null) { return; } if (!cursor.moveToFirst()) { return; } int dataIndex = cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA); int dateAddedIndex = cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATE_ADDED); // 处理获取到的第一行数据 handleMediaRowData(cursor.getString(dataIndex), cursor.getLong(dateAddedIndex)); } catch (Exception e) { e.printStackTrace(); } finally { if (cursor != null && !cursor.isClosed()) { cursor.close(); } } }/** * 处理监听到的资源 */ private void handleMediaRowData(String path, long dateAdded) { long duration = 0; long step = 100; // 发现个别手机会自己修改截图文件夹的文件,截屏功能会误以为是用户在截屏操作,进行捕获,所以加了一个时间判断 if (!isTimeValid(dateAdded)) { Log.d(TAG, "图片插入时间大于1秒,不是截屏"); return; }// 设置最大等待时间为500ms,因为魅族的部分手机保存截图有延迟 while (!checkScreenShot(path) && duration <= 500) { try { duration += step; Thread.sleep(step); } catch (Exception e) { e.printStackTrace(); } }if (checkScreenShot(path)) { if (mCallbackListener != null) { mCallbackListener.onShot(path); } } }/** * 判断时间是否合格,图片插入时间小于1秒才有效 */ private boolean isTimeValid(long dateAdded) { return Math.abs(System.currentTimeMillis() / 1000 - dateAdded) <= 1; }private boolean checkScreenShot(String path) { if (path == null) { return false; } path = path.toLowerCase(); for (String keyword : KEYWORDS) { if (path.contains(keyword)) { return true; } } return false; }/** * 媒体内容观察者 */ private class MediaContentObserver extends ContentObserver { private Uri mUri; MediaContentObserver(Uri uri, Handler handler) { super(handler); mUri = uri; }@Override public void onChange(boolean selfChange) { super.onChange(selfChange); //Log.d("ScreenShot", "图片数据库发生变化:" + selfChange); handleMediaContentChange(mUri); } }/** * 回调监听器 */ public interface CallbackListener { /** * 截屏 * * @param path 图片路径 */ void onShot(String path); } }

使用方式
ScreenShot mScreenShot = ScreenShot.getInstance(); mScreenShot.register(this, new ScreenShot.CallbackListener() { @Override public void onShot(String path) {} } );

【安卓android|安卓android Q(10)截屏截图监听适配 ContentObserver】目前测试对于Android Q(10)以下的设备使用没有问题,但是android Q(10)无法监听设备截屏,如果有知道如果做的请联系我,实时更新文章用于适配

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