android Dialog中SeekBar的使用方法

package com.android.cvt;

import android.app.AlertDialog;

import android.content.Context;

import android.provider.Settings;

import android.view.View;

import android.view.WindowManager;

import android.widget.SeekBar;

import android.widget.SeekBar.OnSeekBarChangeListener;

/*自定义一个MySeekBarDialog*/

public class MySeekBarDialog extends AlertDialog {

private SeekBar brightBar;//用于显示屏幕亮度

private OnSeekbarChangedListener mListener;//监听SeekBar事件，比如拖动等

/*获取监听对象*/

public OnSeekbarChangedListener getmListener() {

return mListener;

}

/*设置监听对象*/

public void setmListener(OnSeekbarChangedListener mListener) {

this.mListener = mListener;

}

/*自定义构造函数用于初始化*/

protected MySeekBarDialog(Context context) {

super(context);

View view = getLayoutInflater().inflate(R.layout.mydialog,null);

brightBar = (SeekBar) view.findViewById(R.id.brightSeekBar);

brightBar.setProgress((int) (android.provider.Settings.System.getInt(

context.getContentResolver(),

android.provider.Settings.System.SCREEN_BRIGHTNESS, 255) ));

setView(view);

brightBar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {

@Override

public void onStopTrackingTouch(SeekBar arg0) {

// TODO Auto-generated method stub

}

@Override

public void onStartTrackingTouch(SeekBar arg0) {

// TODO Auto-generated method stub

}

@Override

public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {

mListener.onChange(progress);

}

});

}

public interface OnSeekbarChangedListener{

public void onChange(int progress);

}

}