lib -> zxing-lite

zxing-lite/src/main/java/com/king/zxing/manager/BeepManager.java

@@ -0,0 +1,111 @@
+package com.king.zxing.manager;
+/*
+ * Copyright (C) 2010 ZXing authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+import android.content.Context;
+import android.content.res.AssetFileDescriptor;
+import android.media.AudioManager;
+import android.media.MediaPlayer;
+import android.os.Vibrator;
+
+import com.king.zxing.R;
+import com.king.zxing.util.LogUtils;
+
+import java.io.Closeable;
+
+/**
+ * @author <a href="mailto:jenly1314@gmail.com">Jenly</a>
+ */
+public final class BeepManager implements MediaPlayer.OnErrorListener, Closeable {
+
+    private static final long VIBRATE_DURATION = 200L;
+
+    private final Context context;
+    private MediaPlayer mediaPlayer;
+    private Vibrator vibrator;
+    private boolean playBeep;
+    private boolean vibrate;
+
+    public BeepManager(Context context) {
+        this.context = context;
+        this.mediaPlayer = null;
+        updatePrefs();
+    }
+
+    public void setVibrate(boolean vibrate){
+        this.vibrate = vibrate;
+    }
+
+    public void setPlayBeep(boolean playBeep){
+        this.playBeep = playBeep;
+    }
+
+    private synchronized void updatePrefs() {
+        if (mediaPlayer == null) {
+            mediaPlayer = buildMediaPlayer(context);
+        }
+        if(vibrator == null){
+            vibrator = (Vibrator)context.getSystemService(Context.VIBRATOR_SERVICE);
+        }
+    }
+
+    public synchronized void playBeepSoundAndVibrate() {
+        if (playBeep && mediaPlayer != null) {
+            mediaPlayer.start();
+        }
+        if (vibrate) {
+            vibrator.vibrate(VIBRATE_DURATION);
+        }
+    }
+
+    private MediaPlayer buildMediaPlayer(Context context) {
+        MediaPlayer mediaPlayer = new MediaPlayer();
+        try {
+            AssetFileDescriptor file = context.getResources().openRawResourceFd(R.raw.zxl_beep);
+            mediaPlayer.setDataSource(file.getFileDescriptor(), file.getStartOffset(), file.getLength());
+            mediaPlayer.setOnErrorListener(this);
+            mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
+            mediaPlayer.setLooping(false);
+            mediaPlayer.prepare();
+            return mediaPlayer;
+        } catch (Exception e) {
+            LogUtils.w(e);
+            mediaPlayer.release();
+            return null;
+        }
+    }
+
+    @Override
+    public synchronized boolean onError(MediaPlayer mp, int what, int extra) {
+        close();
+        updatePrefs();
+        return true;
+    }
+
+    @Override
+    public synchronized void close() {
+        try{
+            if (mediaPlayer != null) {
+                mediaPlayer.release();
+                mediaPlayer = null;
+            }
+        }catch (Exception e){
+            LogUtils.e(e);
+        }
+    }
+
+}