在接收消息广播的onReceive里，跳转到你要显示的界面。如：
Intent intent = new Intent(arg0,MainActivity.class); intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); arg0.startActivity(intent);
在该activity的onCreate()方法里：
super.onCreate(savedInstanceState); getWindow().addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED|WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON); setContentView(R.layout.activity_main);
设置activity的theme属性：
android:theme="@android:style/Theme.Wallpaper.NoTitleBar"
添加点击事件，进入app，突破锁屏：
KeyguardManager keyguardManager = (KeyguardManager) getSystemService(KEYGUARD_SERVICE);
KeyguardLock keyguardLock = keyguardManager.newKeyguardLock("");
keyguardLock.disableKeyguard();
在menifest中加入该权限：
<uses-permission android:name="android.permission.DISABLE_KEYGUARD"/>
