android PopupWindow例程

xxxx.xml

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

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

android:orientation="horizontal"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:background="#FFFFFFFF">

<ImageViewandroid:id="@+id/img"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_margin="5px"/>

<LinearLayoutandroid:orientation="vertical"

android:layout_width="wrap_content"

android:layout_height="wrap_content">

<TextViewandroid:id="@+id/title"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:textColor="#FF000000"

android:textSize="35px"/>

<TextViewandroid:id="@+id/info"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:textColor="#FF000000"

android:textSize="14px"/>

</LinearLayout>

</LinearLayout>

MainPage.java

publicclassMainPageextends Activity {

finalprivate String LOG_TAG = "fpMainPage";

privateListViewlistView;

privateLinearLayoutlayout;

BroadcastReceiverHelperrhelper;

@Override

publicvoidonCreate(BundlesavedInstanceState) {

super.onCreate(savedInstanceState);

layout= newLinearLayout(this);

listView= newListView(this);

listView.setPadding(100, 130, 200, 130);

SimpleAdapteradapter = newSimpleAdapter(this,getData(),R.layout.xxxx,

newString[]{"title","info","img"},

newint[]{R.id.title,R.id.info,R.id.img});

listView.setAdapter(adapter);

layout.addView(listView);

setContentView(layout);

Resources res =getResources();

Drawabledrawable=res.getDrawable(R.drawable.bg5);

layout.setBackgroundColor(0xFFFFFFFF);

listView.setBackgroundDrawable(drawable);

rhelper=newBroadcastReceiverHelper(this);

rhelper.registerAction("android.intent.action.menulongpress");

}

privateList<Map<String, Object>>getData() {

List<Map<String, Object>> list = newArrayList<Map<String, Object>>();

Map<String, Object> map = newHashMap<String, Object>();

map.put("title", "g1");

map.put("info", "google1");

map.put("img",R.drawable.ic_launcher_home);

list.add(map);

returnlist;

}

publicclassBroadcastReceiverHelperextendsBroadcastReceiver{

Contextct=null;

BroadcastReceiverHelperreceiver;

publicBroadcastReceiverHelper(Context c){

ct=c;

receiver=this;

}

publicvoidregisterAction(String action){

IntentFilterfilter=newIntentFilter();

filter.addAction(action);

ct.registerReceiver(receiver, filter);

}

@Override

publicvoidonReceive(Contextcontext, Intentintent) {

if(intent.getAction().equals("android.intent.action.menulongpress")){

Log.d(LOG_TAG,"android.intent.action.menulongpressreceived!");

showFpPopWindow();

}

}

}

privatevoidshowFpPopWindow(){

LinearLayoutlayout2;

layout2 = newLinearLayout(this);

Button b = newButton(this);

Button b2 = newButton(this);

layout2.addView(b);

layout2.addView(b2);

layout2.setBackgroundDrawable(null);

b.setText("test pop.");

b2.setText("hello!");

PopupWindowpw = newPopupWindow(this);

pw.setContentView(layout2);

pw.setFocusable(true);

pw.setWidth(600);

pw.setHeight(100);

pw.showAtLocation(getWindow().peekDecorView(),Gravity.LEFT|Gravity.BOTTOM, 0, 0);

}

}

解析：长按menu后,PhoneWindow发送Broadcast：android.intent.action.menulongpress，接收到后，弹出PopupWindow。显示效果如下：