Android自定义PopupWindow小案例

/** * @param * @author ldm * @description 自定义PopupWindow * @time 2016/9/29 15:26 */public class CustomPopup extends PopupWindow {  //上下文  private Context mContext;  // PopupWindow中控件点击事件回调接口  private IPopuWindowListener mOnClickListener;  //PopupWindow布局文件中的Button  private Button alarm_pop_btn;   /**   * @description 构造方法   * @author ldm   * @time 2016/9/30 9:14   * @param   */  public CustomPopup(Context mContext, int width, int height, IPopuWindowListener listener) {    super(mContext);    this.mContext = mContext;    this.mOnClickListener = listener;    //获取布局文件    View mContentView = LayoutInflater.from(mContext).inflate(R.layout.alarm_disopse_pop, null);    //设置布局    setContentView(mContentView);    // 设置弹窗的宽度和高度    setWidth(width);    setHeight(height);    //设置能否获取到焦点    setFocusable(false);    //设置PopupWindow进入和退出时的动画效果    setAnimationStyle(R.style.popwindow_exit_anim_style);    setTouchable(true); // 默认是true，设置为false，所有touch事件无响应，而被PopupWindow覆盖的Activity部分会响应点击    // 设置弹窗外可点击,此时点击PopupWindow外的范围，Popupwindow不会消失    setOutsideTouchable(false);    //外部是否可以点击，设置Drawable原因可以参考：http://blog.csdn.net/harvic880925/article/details/49278705    setBackgroundDrawable(new BitmapDrawable());    // 设置弹窗的布局界面    initUI();  }  /**   * 初始化弹窗列表   */  private void initUI() {  //获取到按钮    alarm_pop_btn = (Button) getContentView().findViewById(R.id.alarm_pop_btn);    //设置按钮点击事件    alarm_pop_btn.setOnClickListener(new View.OnClickListener() {      @Override      public void onClick(View view) {        if (null != mOnClickListener) {          mOnClickListener.dispose();        }      }    });  }  /**   * 显示弹窗列表界面   */  public void show(View view) {    int[] location = new int[2];    view.getLocationOnScreen(location);    //Gravity.BOTTOM设置在view下方，还可以根据location来设置PopupWindowj显示的位置    showAtLocation(view, Gravity.BOTTOM, 0, 0);  }  /**   * @param   * @author ldm   * @description 点击事件回调处理接口   * @time 2016/7/29 15:30   */  public interface IPopuWindowListener {    void dispose();  }}

 //通过LayoutParams来设置PopupWindow的高度和宽度  ViewGroup.LayoutParams lp = (ViewGroup.LayoutParams)mContentView.getLayoutParams();   lp.widht=400;   lp.height = 180;  mContentView.setLayoutParams(lp);  //但是直接这样写获取到的lp可能为空，我们在获取一个View的LayoutParams时，通常应该这样写：  //在addOnGlobalLayoutListener监听中来获取View的LayoutParams  mContentView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {      @Override      public void onGlobalLayout() {        ViewGroup.LayoutParams lp = (ViewGroup.LayoutParams) mContentView.getLayoutParams();        lp.height = 180;        lp.width = 400;        mContentView.setLayoutParams(lp);      }    });

private CustomPopup alarmPopup;....//初始化PopupWindow这里通过数据200来设置PopupWindow高度alarmPopup=new CustomPopup(getActivity(), ViewGroup.LayoutParams.MATCH_PARENT, 200, this);//这里的this是指当前Activity实现了PopupWindow中IPopuWindowListener接口//弹出PopupWindow @Override  protected void widgetClick(View v) {    super.widgetClick(v);    switch (v.getId()) {      case R.id.popup:        alarmPopup.show(v);        break;    }  }  //处理PopupWindow中按钮点击回调   @Override  public void dispose() {    //TODO sth     if (alarmPopup.isShowing()) {        alarmPopup.dismiss();//关闭PopupWindow      }  }

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  android:id="@+id/pop_ll"  android:layout_width="match_parent"  android:layout_height="60dp"  android:background="#404040"  android:orientation="horizontal">  <Button    android:id="@+id/alarm_pop_btn"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:background="@null"    android:gravity="center"    android:text="@string/dispose"    android:textColor="#FFFFFF"    android:textSize="18sp" /></LinearLayout>

  <style name="popwindow_exit_anim_style" parent="android:Animation">    <item name="android:windowEnterAnimation">@anim/popshow_anim</item>    <!-- 指定显示的动画xml -->    <item name="android:windowExitAnimation">@anim/pophidden_anim</item>    <!-- 指定消失的动画xml -->  </style>

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android" >  <translate  android:duration="500"  android:fromYDelta="100%p"  android:toYDelta="0" /> <alpha  android:duration="500"  android:fromAlpha="0.0"  android:toAlpha="1.0" /></set>

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android" >   <translate  android:duration="500"  android:fromYDelta="0"  android:toYDelta="50%p" /> <alpha  android:duration="500"  android:fromAlpha="1.0"  android:toAlpha="0.0" /></set>