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：

@Override
public 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。