PopupWindow的简单应用

这是一个点击删除按钮，弹出PopupWindow对话框操作的案例，昨天第一次用PopupWindow，拿出来分享下：

xml页面如下：

activity_main.xml

<?xmlversion="1.0"encoding="utf-8"?>

<LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:orientation="horizontal">

<ImageView

android:id="@+id/btn"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:src="@android:drawable/btn_dialog"

/>

</LinearLayout>

window.xml

<?xmlversion="1.0"encoding="utf-8"?>

<LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:background="#ffeeaa"

android:orientation="vertical">

<Button

android:id="@+id/button1"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:alpha="0.6"

android:background="#cccccc"

android:text="删除"/>

<Button

android:id="@+id/button2"

style="?android:attr/buttonStyleSmall"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:text="取消"

android:background="#ffee99"

android:alpha="0.3"/>

</LinearLayout>

唯一的Activity:MainActivity,不用手动注册什么

packagecom.example.popupwindow;

importandroid.support.v7.app.ActionBarActivity;

importandroid.support.v7.app.ActionBar;

importandroid.support.v4.app.Fragment;

importandroid.app.ActionBar.LayoutParams;

importandroid.app.Activity;

importandroid.graphics.drawable.BitmapDrawable;

importandroid.os.Bundle;

importandroid.util.DisplayMetrics;

importandroid.view.LayoutInflater;

importandroid.view.Menu;

importandroid.view.MenuItem;

importandroid.view.View;

importandroid.view.View.OnClickListener;

importandroid.view.ViewGroup;

importandroid.widget.Button;

importandroid.widget.ImageView;

importandroid.widget.PopupWindow;

importandroid.widget.Toast;

importandroid.os.Build;

importandroid.provider.Settings.System;

publicclassMainActivityextendsActivity{

@Override

protectedvoidonCreate(BundlesavedInstanceState){

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

ImageViewbtn=(ImageView)findViewById(R.id.btn);

btn.setOnClickListener(newOnClickListener(){

@Override

publicvoidonClick(Viewv){

//显示窗口

LayoutInflaterinflater=LayoutInflater.from(MainActivity.this);

//引入窗口配置文件

Viewview=inflater.inflate(R.layout.window,null);

//创建PopupWindow对象

finalPopupWindowpop=newPopupWindow(view,LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT,false);

DisplayMetricsmetric=newDisplayMetrics();

getWindowManager().getDefaultDisplay().getMetrics(metric);

intwidth=metric.widthPixels;

pop.setWidth(width);

pop.setHeight(140);

pop.setAnimationStyle(android.R.style.Animation_InputMethod);

//需要设置一下此参数，点击外边可消失

pop.setBackgroundDrawable(newBitmapDrawable());

//设置点击窗口外边窗口消失

pop.setOutsideTouchable(true);

//设置此参数获得焦点，否则无法点击

pop.setFocusable(true);

if(pop.isShowing()){

//隐藏窗口，如果设置了点击窗口外小时即不需要此方式隐藏

pop.dismiss();

}else{

pop.showAsDropDown(v);

}

//得到子页面，从而得到需要添加监听的控件

Vieww=pop.getContentView();

ButtonbtnConfig=(Button)w.findViewById(R.id.button1);

btnConfig.setOnClickListener(newOnClickListener(){

@Override

publicvoidonClick(Viewv){

//TODOAuto-generatedmethodstub

Toast.makeText(MainActivity.this,"删除",Toast.LENGTH_SHORT).show();

}

});

Buttonbtn=(Button)w.findViewById(R.id.button2);

btn.setOnClickListener(newOnClickListener(){

@Override

publicvoidonClick(Viewv){

//TODOAuto-generatedmethodstub

pop.dismiss();

}

});

}

});

}

}