基于popupWindow实现悬浮半透明效果

本文实例为大家分享了popupWindow实现悬浮半透明效果的具体代码，供大家参考，具体内容如下

如上图显示弹出一个半透明框

java代码：

//清空数据
  private void ShowPopup() {
    LayoutInflater mLayoutInflater = (LayoutInflater) getSystemService(LAYOUT_INFLATER_SERVICE);
    ViewGroup mView = (ViewGroup) mLayoutInflater.inflate(
        R.layout.soft_calendar_popup, null, true);
    final PopupWindow popupWindow = new PopupWindow(mView,
        LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, true);
    final RadioButton radio1 = (RadioButton) mView
        .findViewById(R.id.radio0);
    final RadioButton radio2 = (RadioButton) mView
        .findViewById(R.id.radio1);
    final RadioButton radio3 = (RadioButton) mView
        .findViewById(R.id.radio2); 

    Button btn1 = (Button) mView.findViewById(R.id.button1);
    btn1.setOnClickListener(new OnClickListener() { 

      @Override
      public void onClick(View v) {
        //确定按钮实现的操作
        popupWindow.dismiss();
      }
    });
    Button btn2 = (Button) mView.findViewById(R.id.button2);
    btn2.setOnClickListener(new OnClickListener() { 

      @Override
      public void onClick(View v) {
        // 取消按钮实现的操作
        popupWindow.dismiss();
      }
    }); 

    popupWindow.setBackgroundDrawable(new BitmapDrawable());
    popupWindow.showAtLocation(findViewById(R.id.RelativeLayout1),
        Gravity.CENTER | Gravity.CENTER, 0, 0);//在屏幕的中间位置显示
    popupWindow.update();
  }

soft_calendar_popup.xml的内容：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="460px"
  android:layout_height="423px"
  android:background="@drawable/soft_calendar_popup_bg"
  android:orientation="vertical" > 

  <TextView
    android:id="@+id/textView1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginTop="30px"
    android:gravity="center"
    android:text="提示"
    android:textColor="@android:color/white"
    android:textSize="25dip" /> 

  <RadioGroup
    android:id="@+id/radioGroup1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginLeft="100px"
    android:layout_marginRight="100px"
    android:layout_marginTop="30px" > 

    <RadioButton
      android:id="@+id/radio0"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:checked="true"
      android:text="清除当日缓存"
      android:textSize="20dip"
      android:textColor="@android:color/white" /> 

    <RadioButton
      android:id="@+id/radio1"
      android:textSize="20dip"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:text="清除当月缓存"
      android:textColor="@android:color/white" /> 

    <RadioButton
      android:id="@+id/radio2"
      android:textSize="20dip"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:text="清除全部缓存"
      android:textColor="@android:color/white" />
  </RadioGroup> 

  <LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginTop="15dip"
    android:gravity="center_horizontal" > 

    <Button
      android:id="@+id/button1"
      android:layout_width="158px"
      android:layout_height="wrap_content"
      android:layout_marginRight="30dip"
      android:background="@drawable/btn2"
      android:gravity="center"
      android:text="确定"
      android:textColor="@android:color/white" /> 

    <Button
      android:id="@+id/button2"
      android:layout_width="158px"
      android:layout_height="wrap_content"
      android:background="@drawable/btn1"
      android:gravity="center"
      android:text="返回"
      android:textColor="#0072D7" />
  </LinearLayout> 

</LinearLayout> 

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持我们。