Android 开发程序锁应用简单实例

1.基本思路

①.创建已加锁应用的数据库(字段:_id,packagename),如果应用已加锁,将加锁应用的包名维护到数据库中

②.已加锁+未加锁 == 手机中所有应用(AppInfoProvider)

2.已加锁和未加锁的数据适配器

class MyAdapter extends baseAdapter{
  private boolean isLock;
  
  public MyAdapter(boolean isLock) {
    this.isLock = isLock;
  }
  @Override
  public int getCount() {
    if(isLock){
      tv_lock.setText("已加锁应用:"+mLockList.size());
      return mLockList.size();
    }else{
      tv_unlock.setText("未加锁应用:"+mUnLockList.size());
      return mUnLockList.size();
    }
  }

  @Override
  public AppInfo getItem(int position) {
    if(isLock){
      return mLockList.get(position);
    }else{
      return mUnLockList.get(position);
    }
  }

  @Override
  public long getItemId(int position) {
    return position;
  }

  @Override
  public View getView(int position, View convertView, ViewGroup parent) {
    ViewHolder holder = null;
    if(convertView == null){
      convertView = View.inflate(getApplicationContext(), R.layout.listview_islock_item, null);
      holder = new ViewHolder();
      holder.iv_icon = (ImageView) convertView.findViewById(R.id.iv_icon);
      holder.tv_name = (TextView) convertView.findViewById(R.id.tv_name);
      holder.iv_lock = (ImageView) convertView.findViewById(R.id.iv_lock);
      
      convertView.setTag(holder);
    }else{
      holder = (ViewHolder) convertView.getTag();
    }
    final AppInfo appInfo = getItem(position);
    final View animationView = convertView;
    
    holder.iv_icon.setBackgroundDrawable(appInfo.icon);
    holder.tv_name.setText(appInfo.name);
    if(isLock){
      holder.iv_lock.setBackgroundResource(R.drawable.lock);
    }else{
      holder.iv_lock.setBackgroundResource(R.drawable.unlock);
    }
    holder.iv_lock.setonClickListener(new onClickListener() {
      @Override
      public void onClick(View v) {
 //添加动画效果,动画默认是非阻塞的,所以执行动画的同时,动画以下的代码也会执行
 animationView.startAnimation(mTranslateAnimation);//500毫秒
 //对动画执行过程做事件监听,监听到动画执行完成后,再去移除集合中的数据,操作数据库,刷新界面
 mTranslateAnimation.setAnimationListener(new AnimationListener() {
   @Override
   public void onAnimationStart(Animation animation) {
     //动画开始的是调用方法
   }
   @Override
   public void onAnimationRepeat(Animation animation) {
     //动画重复时候调用方法
   }
   //动画执行结束后调用方法
   @Override
   public void onAnimationEnd(Animation animation) {
     if(isLock){
//已加锁------>未加锁过程
//1.已加锁集合删除一个,未加锁集合添加一个,对象就是getItem方法获取的对象
mLockList.remove(appInfo);
mUnLockList.add(appInfo);
//2.从已加锁的数据库中删除一条数据
mDao.delete(appInfo.packageName);
//3.刷新数据适配器
mLockAdapter.notifyDataSetChanged();
     }else{
//未加锁------>已加锁过程
//1.已加锁集合添加一个,未加锁集合移除一个,对象就是getItem方法获取的对象
mLockList.add(appInfo);
mUnLockList.remove(appInfo);
//2.从已加锁的数据库中插入一条数据
mDao.insert(appInfo.packageName);
//3.刷新数据适配器
mUnLockAdapter.notifyDataSetChanged();
     }
   }
 });
      }
    });
    return convertView;
  }
}

MyAdapter

mLockAdapter = new MyAdapter(true);
lv_lock.setAdapter(mLockAdapter);

mUnLockAdapter = new MyAdapter(false);
lv_unlock.setAdapter(mUnLockAdapter);

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