Android之系统音量亮度调节

【实例截图】

【核心代码】

package com.example.contentprovidertest;

import android.app.Activity;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.drawable.BitmapDrawable;
import android.media.AudioManager;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.PopupWindow;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;


public class MainActivity extends Activity implements OnClickListener{

    private static final String TAG = "MainActivity";
    
    private ImageView home;
    private ImageView volume;
    private ImageView brightness;
    
    
    private VolumePopwindow volumePopwindow;
    private BrightnessPopwindow brightnessPopwindow;
    

	
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
    	// TODO Auto-generated method stub
    	super.onCreate(savedInstanceState);
    	setContentView(R.layout.activity_main);
    	initView();
    	initListener();
    	
    }




	private void initView() {
		// TODO Auto-generated method stub
		home=(ImageView) findViewById(R.id.home);
		volume=(ImageView) findViewById(R.id.volume);
		brightness=(ImageView) findViewById(R.id.brightness);
	}


	private void initListener() {
		// TODO Auto-generated method stub
		home.setOnClickListener(this);
		volume.setOnClickListener(this);
		brightness.setOnClickListener(this);
	}
	@Override
	public void onClick(View view) {
		// TODO Auto-generated method stub
		switch (view.getId()) {
		case R.id.home:
			Intent intent = new Intent(Intent.ACTION_MAIN);
			intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 
			intent.addCategory(Intent.CATEGORY_HOME); 
			startActivity(intent);
			Log.i(TAG, "home is click");
			break;
	    case R.id.volume:
	    	volumePopwindow = new VolumePopwindow(MainActivity.this); 
	//		volumePopwindow.showAtLocation(view,Gravity.BOTTOM | Gravity.CENTER_HORIZONTAL, 0, 0);
	    	volumePopwindow.showAtLocation(view, Gravity.CENTER_HORIZONTAL, 0, 0);
	    	Log.i(TAG, "volume is click");
	    	break;
	    case R.id.brightness:

	    	brightnessPopwindow = new BrightnessPopwindow(MainActivity.this); 
	 //		volumePopwindow.showAtLocation(view,Gravity.BOTTOM | Gravity.CENTER_HORIZONTAL, 0, 0);
	    	brightnessPopwindow.showAtLocation(view, Gravity.CENTER_HORIZONTAL, 0, 0);
	    	Log.i(TAG, "brightness is click");

	    	break;

		default:
			break;
		}
	}



   
}