android 底部弹出选项，背景透明，PopupWindow的使用

</pre>http://www.cnblogs.com/zhwl/p/3332636.html<p></p><p>看了这个文章后我才学会的这个东西，先看下面成品，需求不同就不必浪费时间看下去了</p><p></p><p></p><p>这是需要弹出来的布局文件：</p><p>需要让它覆盖整个屏幕，后面会将背景设为半透明</p><p></p><pre name="code" class="html"><?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:id="@+id/rl_personal_center_select_sex_man"
android:layout_width="match_parent"
android:layout_height="120dp"
android:layout_alignParentBottom="true"
>
<Button
android:id="@+id/bt_personal_center_select_sex_man"
android:layout_width="match_parent"
android:layout_height="60dp"
android:background="@color/white"
android:text="男"
android:textSize="20sp"
/>
<View
android:id="@+id/V_1"
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="#d7d7d7"
android:layout_below="@+id/bt_personal_center_select_sex_man"
/>
<Button
android:id="@+id/bt_personal_center_select_sex_woman"
android:layout_width="match_parent"
android:layout_height="60dp"
android:text="女"
android:textSize="20sp"
android:background="@color/white"
android:layout_below="@+id/V_1"
/>

</RelativeLayout>

</RelativeLayout>

这个是PopupWindow类，在需要弹出的activity里面实例化它，然后操作：

import android.content.Context;
import android.graphics.drawable.ColorDrawable;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.PopupWindow;
import android.widget.RelativeLayout;

import com.zuxia.R;

import butterknife.ButterKnife;
import butterknife.InjectView;

/**
* Created by Chen 2015/4/29.
*/
public class PopupSelectSexWindow extends PopupWindow{

private View mMenuView;
Button bt_man;
Button bt_woman;

public PopupSelectSexWindow(Context context,View.OnClickListener itemsOnClick){
super(context);
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
mMenuView = inflater.inflate(R.layout.popup_select_sex, null);
bt_man = (Button)mMenuView.findViewById(R.id.bt_personal_center_select_sex_man);
bt_woman = (Button)mMenuView.findViewById(R.id.bt_personal_center_select_sex_woman);

//取消按钮
//        exit.setOnClickListener(new OnClickListener() {
//
//            public void onClick(View v) {
//                //销毁弹出框
//                dismiss();
//            }
//        });
//        设置按钮监听
bt_man.setOnClickListener(itemsOnClick);
bt_woman.setOnClickListener(itemsOnClick);
//设置SelectPicPopupWindow的View
this.setContentView(mMenuView);
//设置SelectPicPopupWindow弹出窗体的宽
this.setWidth(ViewGroup.LayoutParams.MATCH_PARENT);
//设置SelectPicPopupWindow弹出窗体的高
this.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT);
//设置SelectPicPopupWindow弹出窗体可点击
this.setFocusable(true);
//设置SelectPicPopupWindow弹出窗体动画效果
this.setAnimationStyle(R.style.AppTheme);
//实例化一个ColorDrawable颜色为半透明
ColorDrawable dw = new ColorDrawable(0xb0000000);
//设置SelectPicPopupWindow弹出窗体的背景
this.setBackgroundDrawable(dw);
//mMenuView添加OnTouchListener监听判断获取触屏位置如果在选择框外面则销毁弹出框
mMenuView.setOnTouchListener(new View.OnTouchListener() {

public boolean onTouch(View v, MotionEvent event) {

int height = mMenuView.findViewById(R.id.rl_personal_center_select_sex).getTop();
int y=(int) event.getY();
if(event.getAction()==MotionEvent.ACTION_UP){
if(y<height){
dismiss();
}
}
return true;
}
});

}

@Override
public void showAtLocation(View parent, int gravity, int x, int y) {
super.showAtLocation(mMenuView, gravity, x, y);
}
}

然后在需要弹出popup的activity调用这个，我是把它设置在button的onClick里面，点击性别选择后弹出选项：

menuWindow = new PopupSelectSexWindow(PersonalInformationAct.this, itemsOnClick);
//显示窗口
menuWindow.showAtLocation(PersonalInformationAct.this.findViewById(R.id.rl_main),
Gravity.BOTTOM|Gravity.CENTER_HORIZONTAL, 0, 0); //设置layout在PopupWindow中显示的位置