PopupWindow基本展示，Button底部展示

主要转载：http://blog.csdn.net/harryweasley/article/details/41283129

我是在这兄弟的基础上加了点东西，第一次写博客 写的不好请多谅解。有不好的地方地方请多多指教
写的很low请多原谅

主布局 就是一个Button

< Button

android :id= "@+id/btn_popwindow"

android :layout_width= "match_parent"

android :layout_height= "wrap_content"

android :text= " 点击 "

/>

然后创建PopupWindow的4个Button按钮

android :id= "@+id/first"

android :layout_width= "300dp"

android :layout_height= "wrap_content"

android :text= " 第一个按钮 "

android :background= "#ffaaff"

android :layout_gravity= "center_horizontal"

android :layout_marginTop= "10dp"

/>

android :layout_width= "300dp"

android :layout_height= "wrap_content"

android :text= " 第二个按钮 "

android :background= "#ffaaff"

android :layout_gravity= "center_horizontal"

android :layout_marginTop= "10dp"

/>

android :layout_width= "300dp"

android :layout_height= "wrap_content"

android :text= " 第三个按钮 "

android :background= "#ffaaff"

android :layout_gravity= "center_horizontal"

android :layout_marginTop= "10dp"

/>

android :layout_width= "300dp"

android :layout_height= "wrap_content"

android :text= " 第四个按钮 "

android :background= "#ffaaff"

android :layout_gravity= "center_horizontal"

android :layout_marginTop= "10dp"

/>

在res文件下在创建anim需要创建PopWindow淡入淡出效果

第一个文件pophidden_anim

android :duration= "1000"

android :fromYDelta= "0"

android :toYDelta= "50%p"

/>

android :duration= "1000"

android :fromAlpha= "1.0"

android :toAlpha= "0.0"

/>

第二个文件popshow_anim

android :duration= "1000"

android :fromYDelta= "100%p"

android :toYDelta= "0"

/>

android :duration= "1000"

android :fromAlpha= "0.0"

android :toAlpha= "1.0"

/>

之后在Styles下写入显示动画和消失动画

< style name= "mypopwindow_anim_style" >

	name="android:windowEnterAnimation">@anim/popshow_anim    

	name="android:windowExitAnimation">@anim/pophidden_animstyle>

下面是最后一步 Activity

public class MainActivity extends AppCompatActivity {

@Override

protected void onCreate (Bundle savedInstanceState) {

super .onCreate(savedInstanceState) ;

setContentView(R.layout. activity_main ) ;

Button btn = (Button) findViewById(R.id. btn_popwindow ) ;

btn.setOnClickListener( new View.OnClickListener() {

@Override

public void onClick (View view) {

showPopwindow() ;

}

}) ;

}

private void showPopwindow () {

//利用LayoutInflater 获取view

LayoutInflater inflater = (LayoutInflater) getSystemService(Context. LAYOUT_INFLATER_SERVICE ) ;

View view = inflater.inflate(R.layout. popupwindow_activity ,null ) ;

//两种方法得到宽度和高度

PopupWindow window = new PopupWindow(view ,

WindowManager.LayoutParams. MATCH_PARENT ,

WindowManager.LayoutParams. WRAP_CONTENT

) ;

//设置popwindow弹窗可点击 这句话必须添加，并且为true

window.setFocusable( true ) ;

//实例化一个ColorDrawer颜色为半透明

ColorDrawable color = new ColorDrawable( 0x0000000 ) ;

window.setBackgroundDrawable(color) ;

//设置popwindow消失显示动画

window.setAnimationStyle(R.style. mypopwindow_anim_style ) ;

//在底部显示

window.showAtLocation(MainActivity. this .findViewById(R.id. btn_popwindow ) ,

Gravity. BOTTOM , 0 , 0 ) ;

//设置检验popwindow里的button是否可以点击

Button first = (Button) view.findViewById(R.id. first ) ;

first.setOnClickListener( new View.OnClickListener() {

@Override

public void onClick (View view) {

Toast. makeText (MainActivity. this, " 第一个按钮被点击了 " , Toast. LENGTH_SHORT ).show() ;

}

}) ;

window.setOnDismissListener( new PopupWindow.OnDismissListener() {

@Overr ide

public void onDismiss () {

Toast. makeText (MainActivity. this, "PopWindow 消失了 " , Toast. LENGTH_SHORT ).show() ;

}

}) ;

}

}

第一个界面 第二个界面