解决录音文件丢失问题

--- a/packages/apps/SoundRecorder/src/com/android/soundrecorder/Recorder.java+++ b/packages/apps/SoundRecorder/src/com/android/soundrecorder/Recorder.java@@ -9,6 +9,11 @@ import android.media.MediaPlayer.OnCompletionListener; import android.os.Bundle; import android.os.storage.StorageManager; +import android.provider.MediaStore;+import android.net.Uri;+import android.database.Cursor;+import android.content.ContentResolver;+ import com.mediatek.featureoption.FeatureOption;  import java.io.File;@@ -276,6 +281,54 @@ public class Recorder implements OnCompletionListener {         signalStateChanged(IDLE_STATE);     } +    /**+     * <p>+     * Check file from Media DB, if the file is add by media scanner .+     * @param context+     * @param file+     * @return return true if exited in Media DB,else return fasle.+     */+    private boolean checkFromMediaDB(Context context ,File file ) {       +        Uri base = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;+        final String[] ids = new String[]{MediaStore.Audio.Media._ID};+        final String where = MediaStore.Audio.Media.DATA+                + " LIKE '%"+                + file.getAbsolutePath().replaceFirst(+                        "file:///", "") + "'";++        Cursor cursor = query(context,base, ids, where, null, null);+        try {+               return null != cursor && cursor.getCount() > 0;+        } catch (IllegalStateException e) {+            e.printStackTrace();+        } finally {+            if (cursor != null) {+                cursor.close();+            }+        }+        return false;+    }+    +    /*+     * A simple utility to do a query into the databases.+     */+    private Cursor query(Context context, Uri uri, String[] projection, String selection,+            String[] selectionArgs, String sortOrder) {++        try {+            ContentResolver resolver = context.getContentResolver();+            if (resolver == null) {+                return null;+            }+            return resolver.query(uri, projection, selection, selectionArgs,+                    sortOrder);++        } catch (UnsupportedOperationException ex) {+            return null;+        }+    }+     public void startRecording(int outputfileformat, int recordingType,             String extension, Context context) {         SRLogUtils.i(TAG, "in startRecording() 4 param");@@ -284,9 +337,14 @@ public class Recorder implements OnCompletionListener {                 && mSampleFile.exists()                 && !(mSoundRecorderDoWhat != null && mSoundRecorderDoWhat                         .equals(SoundRecorder.PLAY))) {-            if (!mSampleFile.delete()) {-                SRLogUtils.i(TAG, "<startRecording> delete file fail");+            //if the file is existing in media db, don't delete it.+            if(!checkFromMediaDB(context,mSampleFile)){+                if (!mSampleFile.delete()) {+                    SRLogUtils.i(TAG, "<startRecording> delete file fail");+                }               }+            //End         }          stop();
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