android鎖屏軟件製作

轉載請標明出處http://blog.csdn.net/mingyue_1128

一、首先要創建一個Service保證Service一直開啓，同時不被一鍵清理掉。

二、屏蔽掉系統的鎖屏

三、創建鎖屏的Activity，在Activity中屏蔽掉back,menu,home鍵

四、保證自己的進程不在最近任務中出現

一、創建一個Service名字爲LockService

public class LockService extends Service{

	private KeyguardManager km;
	private KeyguardLock kk;
	private BroadcastReceiver broadcastReceiver=new BroadcastReceiver() {
		
		@Override
		public void onReceive(Context context, Intent arg1) {
			Log.e("-----可以跳到鎖屏界面--------", "---------");
			Intent intent=new Intent(context,LockActivity.class);
			intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
			startActivity(intent);
		}
	};
	@Override
	public IBinder onBind(Intent arg0) {
		
		return null;
	}


	@Override
	public void onStart(Intent intent, int startId) {
		super.onStart(intent, startId);
		
		//服務裏面收到關閉屏幕的動作就發送廣播
		IntentFilter iFilter=new IntentFilter(Intent.ACTION_SCREEN_OFF);

		this.registerReceiver(broadcastReceiver, iFilter);

	}

	@Override
	public void onCreate() {
		super.onCreate();
		//屏蔽掉系統的鎖屏
		km=(KeyguardManager) getSystemService(Context.KEYGUARD_SERVICE);
		kk=km.newKeyguardLock("");
		kk.disableKeyguard();

	}
	
	@Override
	public void onDestroy() {

		super.onDestroy();
	}
	
}

在Service中與他合作的還有一個廣播，當監聽到屏幕關的時候，service就會發送廣播，使屏幕開的時候爲自己鎖屏界面

三、鎖屏界面中屏蔽掉menu,home,back

public class LockActivity extends Activity{
	private  static final int FLAG_HOMEKEY_DISPATCHED = 0x80000000;
	private Button btn_open;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);
		this.getWindow().setFlags(FLAG_HOMEKEY_DISPATCHED, FLAG_HOMEKEY_DISPATCHED);//關鍵代碼 
		setContentView(R.layout.activity_main);
		//解鎖的按鈕
		btn_open=(Button) findViewById(R.id.open);
		
		btn_open.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View arg0) {
				finish();
			}
		});
	}
	@SuppressWarnings("static-access")
	@Override
	public boolean onKeyDown(int keyCode, KeyEvent event) {

		if(keyCode==event.KEYCODE_BACK){
			return true;
		}
		if(keyCode==event. KEYCODE_HOME){
			return true;
		}
		if(keyCode == KeyEvent.KEYCODE_MENU) {//MENU鍵
	        //監控/攔截菜單鍵
	         return true;
	    }     
		return super.onKeyDown(keyCode, event);
	}
}

保證自己的鎖屏程序不在最近進程中出現，只需要在註冊鎖屏界面的Activity時，添加一個屬性android:excludeFromRecents="true"，如下

       <activity 
           android:name="com.mm.wallpaper.LockActivity"
           android:launchMode="singleInstance"
           android:excludeFromRecents="true">
		<intent-filter>

                <category android:name="android.intent.category.LAUNCHER" />
                <category android:name="android.intent.category.DEFAULT" />

            </intent-filter>
       </activity>

四、我們需要看一下主界面怎麼處理

public class MainActivity extends Activity {
	MyBroadcast receiveBroadCast;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		//註冊廣播
		receiveBroadCast = new MyBroadcast();
		IntentFilter filter = new IntentFilter();
		filter.addAction("action"); // 只有持有相同的action的接受者才能接收此廣播
		registerReceiver(receiveBroadCast, filter);
		
		//發送廣播
		Intent intent=new Intent();
		intent.setAction("action");
		this.sendBroadcast(intent);
		
	}
	public class MyBroadcast extends BroadcastReceiver{

		@Override
		public void onReceive(Context context, Intent intent) {

			KeyguardManager km = (KeyguardManager)context.getSystemService(Context.KEYGUARD_SERVICE);

			KeyguardLock kk = km.newKeyguardLock("");
			kk.disableKeyguard();
			
			//開始服務
			Intent service=new Intent();
			service.setClass(context,LockService.class);//稍後再定義
			context.startService(service);
		}
		
	}
	@Override
	protected void onDestroy() {
		// TODO Auto-generated method stub
		super.onDestroy();
		unregisterReceiver(receiveBroadCast);
	}
	
}

在這裏我們需要註冊一個廣播保證服務的開啓

在配置清單中MainActivity需要多一個屬性來保證程序始終在

   <category android:name="android.intent.category.HOME"/>

整個的流程大概如此，希望對想做解鎖軟件的朋友有所幫助。