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   源码介绍

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已屏蔽返回键 home键

package com.lihua.lockscreen;

import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.os.Vibrator;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.util.Log;
import android.view.KeyEvent;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Toast;

public class LockScreenActivity extends Activity {
	private final String TAG = "LockScreenActivity";
	private SliderRelativeLayout sliderRelativeLayout;
	public static int MSG_LOCK_SUCESS = 1;
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		
		requestWindowFeature(Window.FEATURE_NO_TITLE); //不要title
		getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, 
				WindowManager.LayoutParams.FLAG_FULLSCREEN); //全屏显示
		
		setContentView(R.layout.activity_lock_screen);
		
		sliderRelativeLayout = (SliderRelativeLayout) findViewById(R.id.sliderLayout);
		sliderRelativeLayout.setMainHandler(handler);
		sliderRelativeLayout.getBackground().setAlpha(180); //设置背景的透明度
		
		startService(new Intent(LockScreenActivity.this, LockScreenService.class)); //这里要显示的调用服务
	}
	
	private Handler handler = new Handler(){
		@Override
		public void handleMessage(Message msg) {
			if(MSG_LOCK_SUCESS == msg.what){
				//Toast.makeText(getApplicationContext(), R.string.lockSuccess, 1).show();
				virbate();
				finish();
			}
		}
	};
	
	/**
	 * 震动
	 */
	private void virbate(){
		Vibrator vibrator = (Vibrator) this.getSystemService(Context.VIBRATOR_SERVICE);
		vibrator.vibrate(200);
	}
	
	/**
	 * 屏蔽掉Home键
	 */
	@Override
	public void onAttachedToWindow() {
		this.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG);
		super.onAttachedToWindow();
	}
	
	/**
	 * 屏蔽掉返回键
	 */
	@Override
	public boolean onKeyDown(int keyCode, KeyEvent event) {
		if(event.getKeyCode() == KeyEvent.KEYCODE_BACK){
			return true;
		} else {
			return super.onKeyDown(keyCode, event);
		}
	}
}