android 4.0后不允许屏蔽掉home键
屏蔽home键的方法
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// 屏蔽掉Home键 public void onAttachedToWindow() { this.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG); super.onAttachedToWindow(); } |
下面是实例demo
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android4.0以上版本运行之后就会报错 java.lang.IllegalArgumentException: Window type can not be changed after the window is added. android4.0以下就没有问题 代码 package com.happylock;
import java.sql.Date; import java.text.SimpleDateFormat; import android.app.Activity; import android.content.Intent; import android.graphics.Bitmap; import android.graphics.drawable.AnimationDrawable; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.util.Log; import android.view.KeyEvent; import android.view.Window; import android.view.WindowManager; import android.widget.ImageView; import android.widget.TextView; import com.happylock.R; import com.happylock.service.ZdLockService; import com.happylock.util.DateUtil; import com.happylock.util.ImageUtil;
public class LockActivity extends Activity {
private static String TAG = "QINZDLOCK"; private SliderRelativeLayout sliderLayout = null; private WindowManager manager; private ImageView dot_left; private ImageView dot_right; private AnimationDrawable animArrowDrawable = null; private AnimationDrawable animArrowDrawable1 = null; private TextView tv_date = null; private TextView tv_date1 = null; private TextView tv_time = null; private static final int msgKey1 = 1; public static int MSG_LOCK_SUCESS = 1; public static final int FLAG_HOMEKEY_DISPATCHED = 0x80000000;//android 4.0版本以上的屏蔽home键
/** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { requestWindowFeature(Window.FEATURE_NO_TITLE); getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN); this.getWindow().setFlags(FLAG_HOMEKEY_DISPATCHED, FLAG_HOMEKEY_DISPATCHED);//android 4.0版本以上的屏蔽home键 关键代码
super.onCreate(savedInstanceState); setContentView(R.layout.lockactivity_main);
manager = (WindowManager) getSystemService(WINDOW_SERVICE); tv_date = (TextView) findViewById(R.id.tv_date); tv_date1 = (TextView) findViewById(R.id.tv_date1); tv_time = (TextView) findViewById(R.id.tv_time); new TimeThread().start(); // 设置图片 Bitmap bitmap = ImageUtil.scaleImage(manager, getResources(), R.drawable.dot_line_left, 50, 50); Bitmap bitmap1 = ImageUtil.scaleImage(manager, getResources(), R.drawable.dot_line_right, 50, 50); dot_left = (ImageView) findViewById(R.id.dot_left); dot_right = (ImageView) findViewById(R.id.dot_right); dot_left.setImageBitmap(bitmap); dot_right.setImageBitmap(bitmap1);
initViews(); startService(new Intent(LockActivity.this, ZdLockService.class)); sliderLayout.setMainHandler(mHandler); }
private void initViews() { sliderLayout = (SliderRelativeLayout) findViewById(R.id.slider_layout); // 获得动画，并开始转动 animArrowDrawable = new AnimationDrawable(); animArrowDrawable1 = new AnimationDrawable(); }
@Override protected void onResume() { super.onResume(); // 设置动画 mHandler.postDelayed(AnimationDrawableTask, 300); // 开始绘制动画 }
@Override protected void onPause() { super.onPause(); animArrowDrawable.stop(); animArrowDrawable1.stop(); }
protected void onDestory() { super.onDestroy(); }
// 通过延时控制当前绘制bitmap的位置坐标 private Runnable AnimationDrawableTask = new Runnable() { public void run() { animArrowDrawable.start(); animArrowDrawable1.start(); mHandler.postDelayed(AnimationDrawableTask, 300); } };
private Handler mHandler = new Handler() { public void handleMessage(Message msg) { Log.i(TAG, "handleMessage : #### "); if (MSG_LOCK_SUCESS == msg.what) finish(); // 锁屏成功时，结束我们的Activity界面 } };
// 屏蔽掉Home键 public void onAttachedToWindow() { this.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD_DIALOG); super.onAttachedToWindow(); }
// 屏蔽掉Back键 public boolean onKeyDown(int keyCode, KeyEvent event) { if (event.getKeyCode() == KeyEvent.KEYCODE_BACK){ return true; }else{ return super.onKeyDown(keyCode, event); } }
// 开启一个线程，动态显示时间 public class TimeThread extends Thread { @Override public void run() { do { try { Thread.sleep(1000); Message msg = new Message(); msg.what = msgKey1; timeHandler.sendMessage(msg); } catch (InterruptedException e) { e.printStackTrace(); } } while (true); } }
private Handler timeHandler = new Handler() { @Override public void handleMessage(Message msg) { super.handleMessage(msg); switch (msg.what) { case msgKey1: Date curDate = new Date(System.currentTimeMillis());// 获取当前时间 // 设置年-月-日 String str = new SimpleDateFormat("yyyy-MM-dd").format(curDate); // 设置周几 String str1 = DateUtil.DateToWeek(curDate); // 设置时:分 String str2 = new SimpleDateFormat("HH:mm").format(curDate); tv_date.setText(str); tv_date1.setText(str1); tv_time.setText(str2); break; default: break; } } }; } 解决方法http://blog.csdn.net/com360/article/details/6663586 |
