popupWindow 實現懸浮半透明效果

 

如顯示彈出一個半透明框

java代碼：

//清空資料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() {@Overridepublic void onClick(View v) {//確定按鈕實現的操作 popupWindow.dismiss();}});Button btn2 = (Button) mView.findViewById(R.id.button2);btn2.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {// 取消按鈕實現的操作popupWindow.dismiss();}});popupWindow.setBackgroundDrawable(new BitmapDrawable());popupWindow.showAtLocation(findViewById(R.id.RelativeLayout1),Gravity.CENTER | Gravity.CENTER, 0, 0);//在螢幕的中間位置顯示popupWindow.update();}

soft_calendar_popup.xml的內容：
<?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="清除當日緩衝"            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="清除當月緩衝"            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="清除全部緩衝"            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="確定"            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>