Popupwindow 的简单实用案例(显示在控件下方)

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  android:layout_width="match_parent"  android:layout_height="match_parent"  android:orientation="vertical">  <RelativeLayout    android:layout_width="match_parent"    android:layout_height="match_parent"    android:background="#669E9E9E"><LinearLayout  android:layout_width="match_parent"  android:layout_height="wrap_content"  android:orientation="horizontal"  android:background="#E4E4E4"  >  <TextView    android:id="@+id/popupwindow_Jan"    android:layout_width="0dp"    android:layout_height="wrap_content"    android:layout_weight="1"    android:text="一月份"    android:gravity="center"    />  <TextView    android:id="@+id/popupwindow_Feb"    android:layout_width="0dp"    android:layout_height="wrap_content"    android:layout_weight="1"    android:text="二月份"    android:gravity="center"    />  <TextView    android:id="@+id/popupwindow_Mar"    android:layout_width="0dp"    android:layout_height="wrap_content"    android:layout_weight="1"    android:text="三月份"    android:gravity="center"    /></LinearLayout>  </RelativeLayout></LinearLayout>

public void onClick(View v) {  switch (v.getId()) {   case R.id.home_travel_modes_yuefen_textview:       showPopupWindow(v);      break;   case R.id.popupwindow_Jan:      showToastMsg("一月份");      break;    case R.id.popupwindow_Feb:      showToastMsg("二月份");      break;    default:      break;  } public void showPopupWindow(View v){    View contentView = LayoutInflater.from(HomeTravelModesActivity.this).inflate(R.layout.home_popuplayout, null);    TextView JanText = (TextView)contentView.findViewById(R.id.popupwindow_Jan);    TextView FebText = (TextView)contentView.findViewById(R.id.popupwindow_Feb);    TextView MarText = (TextView)contentView.findViewById(R.id.popupwindow_Mar);    JanText.setOnClickListener(this);    FebText.setOnClickListener(this);    MarText.setOnClickListener(this);    final PopupWindow popupWindow = new PopupWindow(contentView,        LinearLayout.LayoutParams.MATCH_PARENT, 300, true);    popupWindow.setTouchable(true);//    popupWindow.setTouchInterceptor(new View.OnTouchListener() {////      @Override//      public boolean onTouch(View v, MotionEvent event) {////        Log.i("mengdd", "onTouch : ");////        return false;//        // 这里如果返回true的话，touch事件将被拦截//        // 拦截后 PopupWindow的onTouchEvent不被调用，这样点击外部区域无法dismiss//      }//    });    // 如果不设置PopupWindow的背景，无论是点击外部区域还是Back键都无法dismiss弹框    // 我觉得这里是API的一个bug    popupWindow.setBackgroundDrawable(getResources().getDrawable(        R.mipmap.ic_launcher));    // 设置好参数之后再show    popupWindow.showAsDropDown(v);  }

@Overridepublic void onWindowFocusChanged(boolean hasFocus) {  super.onWindowFocusChanged(hasFocus);  //弹出PopupWindow的具体代码}