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| package com.mx.browser.utils;
import java.io.File;
import java.util.Locale;
import com.mx.utils.FileUtils;
import com.mx.utils.Log;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.media.MediaScannerConnection;
import android.media.MediaScannerConnection.OnScanCompletedListener;
import android.net.Uri;
import android.provider.MediaStore.Audio;
import android.provider.MediaStore.Images;
import android.provider.MediaStore.Video;
import android.text.TextUtils;
/**
* Utility Methods for Media Library Operations
* @author androidyue
* Referrer http://androidyue.github.io/blog/2014/01/19/scan-media-files-in-android/
*/
public class MediaUtils {
private static final String LOGTAG = "MediaUtils";
/**
* Scan a media file by sending a broadcast.This is the easiest way.
* 对方成功接收广播并处理条件 文件必须存在，文件路径必须以Environment.getExternalStorageDirectory().getPath() 的返回值开头
*/
public static void sendScanFileBroadcast(Context context, String filePath) {
File file = new File(filePath);
Intent intent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.fromFile(file));
context.sendBroadcast(intent);
}
/**
*
* @param context
* @param paths File paths to scan
* @param mimeTypes mimeTypes in array;it could be null;then
* @param callback
*/
public static void scanFiles(Context context, String[] paths, String[] mimeTypes, OnScanCompletedListener callback) {
if (null != paths && paths.length != 0) {
MediaScannerConnection.scanFile(context, paths, mimeTypes, callback);
} else {
Log.i(LOGTAG, "scanFiles paths = null or paths.length=0 paths=" + paths);
}
}
public static void scanFiles(Context context, String[] paths, String[] mimeTypes) {
scanFiles(context, paths, mimeTypes, null);
}
public static void scanFiles(Context context, String[] paths) {
scanFiles(context, paths, null);
}
public static int removeImageFromLib(Context context, String filePath) {
ContentResolver resolver = context.getContentResolver();
return resolver.delete(Images.Media.EXTERNAL_CONTENT_URI, Images.Media.DATA + "=?", new String[]{filePath});
}
public static int removeAudioFromLib(Context context, String filePath) {
return context.getContentResolver().delete(Audio.Media.EXTERNAL_CONTENT_URI,
Audio.Media.DATA + "=?", new String[] {filePath});
}
public static int removeVideoFromLib(Context context, String filePath) {
return context.getContentResolver().delete(Video.Media.EXTERNAL_CONTENT_URI,
Video.Media.DATA + "=?", new String[] {filePath});
}
public static int removeMediaFromLib(Context context, String filePath) {
String mimeType = FileUtils.getFileMimeType(filePath);
int affectedRows = 0;
if (null != mimeType) {
mimeType = mimeType.toLowerCase(Locale.US);
if (isImage(mimeType)) {
affectedRows = removeImageFromLib(context, filePath);
} else if (isAudio(mimeType)) {
affectedRows = removeAudioFromLib(context ,filePath);
} else if (isVideo(mimeType)) {
affectedRows = removeVideoFromLib(context, filePath);
}
}
return affectedRows;
}
public static boolean isAudio(String mimeType) {
return mimeType.startsWith("audio");
}
public static boolean isImage(String mimeType) {
return mimeType.startsWith("image");
}
public static boolean isVideo(String mimeType) {
return mimeType.startsWith("video");
}
public static boolean isMediaFile(String filePath) {
String mimeType = FileUtils.getFileMimeType(filePath);
return isMediaType(mimeType);
}
public static boolean isMediaType(String mimeType) {
boolean isMedia = false;
if (!TextUtils.isEmpty(mimeType)) {
mimeType = mimeType.toLowerCase(Locale.US);
isMedia = isImage(mimeType) || isAudio(mimeType) || isVideo(mimeType);
}
return isMedia;
}
/**
* Before using it,please do have a media type check.
* @param context
* @param srcPath
* @param destPath
* @return
*/
public static int renameMediaFile(Context context, String srcPath, String destPath) {
removeMediaFromLib(context, srcPath);
sendScanFileBroadcast(context, destPath);
return 0;
}
}
|
