popupwindow 模拟新浪、腾讯title弹框效果

.jpg外部引用 原始文档

MainActivity.java外部引用 原始文档

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package com.jj.popupwindow; import android.app.Activity; import android.graphics.drawable.BitmapDrawable; import android.os.Bundle; import android.view.Gravity; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.Window; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.LinearLayout; import android.widget.ListView; import android.widget.PopupWindow; /*** * PopupWindow * * @author zhangjia * */ public class MainActivity extends Activity { private Button button; private PopupWindow popupWindow; private LinearLayout layout; private ListView listView; private String title[] = { "全部", "我的微博", "周边", "智能排版", "同学" }; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); setContentView(R.layout.main); button = (Button) findViewById(R.id.tv_title); button.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { button.getTop(); int y = button.getBottom() * 3 / 2; int x = getWindowManager().getDefaultDisplay().getWidth() / 4; showPopupWindow(x, y); } }); } public void showPopupWindow(int x, int y) { layout = (LinearLayout) LayoutInflater.from(MainActivity.this).inflate( R.layout.dialog, null); listView = (ListView) layout.findViewById(R.id.lv_dialog); listView.setAdapter(new ArrayAdapter<String>(MainActivity.this, R.layout.text, R.id.tv_text, title)); popupWindow = new PopupWindow(MainActivity.this); popupWindow.setBackgroundDrawable(new BitmapDrawable()); popupWindow .setWidth(getWindowManager().getDefaultDisplay().getWidth() / 2); popupWindow.setHeight(300); popupWindow.setOutsideTouchable(true); popupWindow.setFocusable(true); popupWindow.setContentView(layout); // showAsDropDown会把里面的view作为参照物，所以要那满屏幕parent // popupWindow.showAsDropDown(findViewById(R.id.tv_title), x, 10); popupWindow.showAtLocation(findViewById(R.id.main), Gravity.LEFT | Gravity.TOP, x, y);//需要指定Gravity，默认情况是center. listView.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) { button.setText(title[arg2]); popupWindow.dismiss(); popupWindow = null; } }); } }

PopupWindowDemo.rar