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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