动态生成8个录音按钮

目的：动态生成8个录音按钮，均匀分布于录音下方。点击每个动态生成的按钮播放各自的录音。

不解释了，相关的两个知识点是动态生成按钮与录音。

缺点：按钮不可删除（我不会）；此界面avd上正常显示，我的手机上正常显示，但是我的一个同学手机上显示：动态生成的按钮只可显示上半部分。这是我从我的一个程序上摘下来的，我的这个页面是一个Fragment，而不是Activity。

源代码：

TextView3Fragment.java:

import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;


import com.example.change.R;
import com.example.mine.Writenote_03;


import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.media.MediaPlayer;
import android.media.MediaRecorder;
import android.media.MediaPlayer.OnCompletionListener;
import android.os.Bundle;
import android.os.Environment;
import android.support.v4.app.Fragment;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;


public class TextView3Fragment extends Fragment {
Context context;
Button bt_insert_pic;

private static final String LOG_TAG = "AudioRecordTest";
private String FileName = null;


private Button startRecord;

private IntentFilter intentFilter;
 
boolean isstart = false;
boolean isplay = false;
 
private MediaPlayer mPlayer = null;
private MediaRecorder mRecorder = null;
private Date date;
private SimpleDateFormat sdf;


private long zeroTime;

int width;
int height;
RelativeLayout layout;
Button Btn[] ;
Button bt_start;
int i=0;
int j=-1;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// TODO Auto-generated method stub
View view=inflater.inflate(R.layout.view3, container,false);
context=getActivity();
return view;
}
public void onActivityCreated(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onActivityCreated(savedInstanceState);
        initView();
        
        
  FileName = Environment.getExternalStorageDirectory().getAbsolutePath();
  FileName += "/gadgets/record/recordsound.3gp";
  File file = new File(FileName);
  //file.getParentFile().getParentFile().delete();
  if (!file.getParentFile().exists())
  {
  file.getParentFile().mkdirs();
  }
  init();
    }
void init() {


Calendar cal = Calendar.getInstance();
cal.setTime(new Date());
cal.set(Calendar.HOUR_OF_DAY, 0);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MILLISECOND, 0);
cal.add(Calendar.DAY_OF_MONTH, 1);
date = cal.getTime();
zeroTime = date.getTime();
sdf = new SimpleDateFormat("mm:ss");
}
   
@Override
    public void onAttach(Activity activity) {
        // TODO Auto-generated method stub
        super.onAttach(activity);
    }
    private void initView() {
        
        bt_insert_pic = (Button) getView().findViewById(R.id.insert_pic);
        bt_insert_pic.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View arg0) {
                Intent intent = new Intent("android.text_change");
                intent.putExtra("bt_insert_pic", "nothing");
                getActivity().sendBroadcast(intent);
            }
        });
        
 DisplayMetrics dm = new DisplayMetrics();
 getActivity().getWindowManager().getDefaultDisplay().getMetrics(dm);
 width = dm.widthPixels;
 height = dm.heightPixels;


 layout = (RelativeLayout)getActivity().findViewById(R.id.rll); 
 
 Btn = new Button[8];
        
startRecord = (Button)getActivity(). findViewById(R.id.bt_record);
startRecord.setText("录音");


startRecord.setOnClickListener(new startRecordListener());

    }

class startRecordListener implements OnClickListener {


@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if (!isstart||mRecorder == null) {
  mRecorder = new MediaRecorder();
  mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
  mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
  mRecorder.setOutputFile(FileName+i);
  mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
  try {
  mRecorder.prepare();
  } catch (IOException e) {
  Log.e(LOG_TAG, "prepare() failed");
  }
  mRecorder.start();
  isstart = true;
  startRecord.setText("取消");
  new Thread(new Runnable() {


  @Override
  public void run() {
  // TODO Auto-generated method stub
  long time = zeroTime;
  while (isstart) {
  date = new Date(time);
  getActivity().runOnUiThread(new Runnable() {


  @Override
  public void run() {
  // TODO Auto-generated method stub
  try {


 
  } catch (Exception e) {
  // TODO: handle exception
  Toast.makeText(getActivity(),
  e.getMessage(),
  Toast.LENGTH_LONG).show();
  }
  }
  });
  time += 1000;
  try {
  Thread.sleep(1000);
  } catch (InterruptedException e) {
  // TODO Auto-generated catch block
  e.printStackTrace();
  }
  }
  }
  }).start();
  }  else {
  mRecorder.release();
isstart = false;
startRecord.setText("录音");

if(i<8){
       Btn[i]=new Button(getActivity());
       Btn[i].setId(2000+i); 
       Btn[i].setText("音频"+i);  
       Btn[i].setTag(i);
       Btn[i].setOnClickListener(new startPlayListener());
       RelativeLayout.LayoutParams btParams = new RelativeLayout.LayoutParams ((width-50)/4,70);  //���ð�ť�Ŀ�Ⱥ͸߶�
       if (i%4 == 0) {
        j++;
       }
       btParams.leftMargin = 10+ ((width-50)/4+10)*(i%4);           
       btParams.topMargin = 80 + 55*j;       
       layout.addView(Btn[i],btParams);   
       i++;
}else{
Toast.makeText(getActivity(), "too many", Toast.LENGTH_SHORT).show();
}

}

}
}

class startPlayListener implements OnClickListener{


@Override
public void onClick(View v) {
// TODO Auto-generated method stub
final int z=(Integer) v.getTag();
if (mPlayer == null) {
mPlayer = new MediaPlayer();
try {
mPlayer.setDataSource(FileName+z);
System.out.println(z+"is play");
mPlayer.prepare();
mPlayer.start();
isplay = true;
mPlayer.setOnCompletionListener(new OnCompletionListener() {


@Override
public void onCompletion(MediaPlayer arg0) {
// TODO Auto-generated method stub
mPlayer.release();
mPlayer = null;
isplay = false;


new Thread(new Runnable() {


@Override
public void run() {
// TODO Auto-generated method stub
long time = zeroTime;
while (isplay) {
date = new Date(time);
getActivity().runOnUiThread(new Runnable() {


@Override
public void run() {
// TODO Auto-generated method
// stub
try {


Btn[z].setText("playTime: "
+ sdf.format(date));

} catch (Exception e) {
// TODO: handle exception
Toast.makeText(getActivity(),
e.getMessage(),
Toast.LENGTH_LONG)
.show();
}
}
});
time += 1000;
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}).start();
}

});

} catch (IOException e) {
}
}else {
mPlayer.release();
mPlayer = null;
isplay = false;
Toast.makeText(getActivity(), "mPlayer is not null", Toast.LENGTH_SHORT).show();
} 
}

}

}

view3.xml:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="100sp"
    android:orientation="vertical"
    android:id="@+id/rll">
    <Button 
        android:id="@+id/bt_record"
        android:layout_width="100sp"
        android:layout_height="wrap_content"
        android:text="录音"/>
    <Button 
        android:id="@+id/insert_pic"
        android:layout_width="100sp"
        android:layout_height="wrap_content"
        android:text="插入照片"
        android:layout_toRightOf="@id/bt_record"
        />
    
   
</RelativeLayout>