仿微信发送语音消息的功能

微信的发送语音是有一个向上取消的，我们使用onTouchListener来监听手势，然后做出相应的操作就行了。

直接上代码：

//语音操作对象private MediaPlayer mPlayer = null;private MediaRecorder mRecorder = null;//语音文件保存路径private String FileName = null;

FileName = Environment.getExternalStorageDirectory().getAbsolutePath() + "/soundrecord/amrsend.amr";

定义一个ImageView，然后给它设置监听事件：

@Overridepublic boolean onTouch(View view, MotionEvent motionEvent) {    switch (motionEvent.getAction()) {        case MotionEvent.ACTION_DOWN:            beginX = motionEvent.getX();            beginY = motionEvent.getY();            Log.e("MainActivity", "beginX:" + beginX);            Log.e("MainActivity", "beginY:" + beginY);            Log.e("MainActivity", "ACTION_DOWN");            mRecorder = new MediaRecorder();            mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);            mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);            mRecorder.setOutputFile(FileName);            mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);            try {                mRecorder.prepare();            } catch (IOException e) {                Log.e("MainActivity", "prepare() failed" + e);            }            mRecorder.start();            break;        case MotionEvent.ACTION_UP:            finalX = motionEvent.getX();            finalY = motionEvent.getY();            Log.e("MainActivity", "finalX:" + finalX);            Log.e("MainActivity", "finalY:" + finalY);            Log.e("MainActivity", "ACTION_UP");            mRecorder.stop();            mRecorder.release();            mRecorder = null;            if ((beginY - finalY) > 50) {                Log.e("MainActivity", "执行删除");                new File(FileName).delete();                Log.e("MainActivity", "执行删除后文件是否还存在：" + new File(FileName).exists());            }            break;        default:            break;    }    return true;}

然后在清单文件中加上需要的权限就行了：

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /><uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" /><uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /><uses-permission android:name="android.permission.RECORD_AUDIO" />

也可以在按下之后播放动画，显示正在录音，然后在抬起动作之后结束动画，这样就比较形象了。