Android PopupWindow的使用
下面是一个弹出带ListView和TextView的PopupWindow实例：
import android.app.Activity;
import android.content.Context;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.PopupWindow;
import android.widget.TextView;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
/**
* Created by SRain on 2015/10/15.
* <p/>
* 弹出框
*/
public class PopupWindowUtils implements View.OnClickListener {
private PopupWindow popupWindow;
private Context context;
private View view;
private TextView tvClose;
private JSONArray jsonArray;
private BasicPopuListAdapter adapter; //ListView的适配器
public PopuWindowUtils(Context context, View view, JSONArray jsonArray, int index) {
this.context = context;
this.view = view;
this.jsonArray = jsonArray;
initPopuWindow(index);
}
/**
* 弹出popupwindow
*
* @param index 弹出框样式标识
*/
private void initPopuWindow(final int index) {
View contentView = LayoutInflater.from(context).inflate(R.layout.layout_popupwindow, null);
ListView listView = (ListView) contentView.findViewById(R.id.lv_files);
tvClose = (TextView) contentView.findViewById(R.id.tvClose);
tvClose.setVisibility(View.VISIBLE);
tvClose.setOnClickListener(this);
/*
* 创建PopupWindow实例
* getScreenWidth(), (int) (getScreenWidth() * 0.6))分别是宽度和高度
*/
if (popupWindow == null) {
popupWindow = new PopupWindow(contentView, getScreenWidth(), (int) (getScreenWidth() * 0.6));
}
// 自定义view添加触摸事件
contentView.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
if (popupWindow != null && popupWindow.isShowing()) {
popupWindow.dismiss();
return true;
}
return false;
}
});
switch (index) {
case 1:
adapter = new RoutePupuAdapter(context, jsonArray);
break;
}
listView.setAdapter(adapter);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
try {
adapter.setSelectedPosition(position);
// 更新列表框
adapter.notifyDataSetInvalidated();
JSONObject object = jsonArray.getJSONObject(position);
clickFunction(index, object);
} catch (JSONException e) {
Log.e("onItemClick", e.toString());
}
}
});
popupWindow.setAnimationStyle(R.style.PopupAnimation);
popupWindow.setFocusable(true);
/*
* 弹出框位置
*/
popupWindow.showAsDropDown(view, 0, -110);
//popupWindow.showAtLocation(MainActivity.this.findViewById(R.id.main), Gravity.BOTTOM|Gravi //ty.CENTER_HORIZONTAL, 0, 0); //设置layout在PopupWindow中显示的位置,从底部弹出
}
/**
* 根据屏幕宽度设置高度值
*/
private int getScreenWidth() {
//获取屏幕宽度
DisplayMetrics dm = new DisplayMetrics();
double densityDpi = dm.density;
//获取屏幕信息
((Activity) context).getWindowManager().getDefaultDisplay().getMetrics(dm);
int screenWidth = dm.widthPixels;
return screenWidth;
}
public void clickFunction(int index, JSONObject json) {
switch (index) {
case 1:
((LocationMapActivity) context).initRoadLines(json);
break;
}
}
/**
* 销毁PopupWindow
*/
public boolean dismissPopu() {
if (popupWindow != null && popupWindow.isShowing()) {
popupWindow.dismiss();
return true;
}
return false;
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.tvClose:
dismissPopu();
break;
}
}
}
//这是BasicPopuListAdapter代码，自己的listview中adapter继承它就可以了：
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import org.json.JSONArray;
import org.json.JSONObject;
/**
* Created by SRain on 2015/10/20.
* <p/>
* 普通listview适配器
*/
public abstract class BasicPopuListAdapter extends BaseAdapter {
protected Context context;
protected JSONArray array;
protected LayoutInflater mInflater;
private int selectedPosition = -1;
public BasicPopuListAdapter(Context context, JSONArray array) {
this.context = context;
this.array = array;
mInflater = LayoutInflater.from(context);
}
@Override
public int getCount() {
return array.length();
}
@Override
public Object getItem(int position) {
JSONObject object = null;
try {
object = array.getJSONObject(position);
} catch (Exception e) {
}
return object;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public abstract View getView(int position, View convertView, ViewGroup parent);
public abstract void setSelectedPosition(int position);
public JSONArray getData(){
return this.array;
}
}
这是弹出框的布局文件：
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@color/result_view" android:orientation="vertical"> <ListView android:id="@+id/lv_files" android:layout_weight="1" android:layout_width="match_parent" android:layout_height="match_parent" /> <TextView android:id="@+id/tvClose" android:layout_marginTop="2dp" android:visibility="gone" android:layout_width="match_parent" android:layout_height="45dp" android:background="@color/green" android:gravity="center" android:text="关闭" android:textColor="@color/white" /> </LinearLayout>
style中添加：
<style name="PopupAnimation" mce_bogus="1" parent="android:Animation"> <item name="android:windowEnterAnimation">@anim/dialog_enter</item> <item name="android:windowExitAnimation">@anim/dialog_exit</item> </style>
drawable中添加dialog_enter.xml和dialog_exit.xml:
<!--dialog_enter--> <?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android"> <translate android:duration="500" android:fromYDelta="500" android:toYDelta="0" /> </set>
<!--dialog_exit--> <?xml version="1.0" encoding="utf-8"?> <set xmlns:android="http://schemas.android.com/apk/res/android"> <translate android:duration="500" android:fromYDelta="0" android:toYDelta="500" /> </set>