popupwindow练习
今天查资源练习了这个的使用，对于焦点问题，整的脑袋有点大，不知道是模拟器原因 还是 程序原因，在弹出窗口里德按钮点击效果总是不明显。有时弹出窗口显示时，返回键感觉不好使，退出整个程序。晕了。不过收益还是挺大的了，学会使用了。有的时候alertdialog给他setView也是可行的，在android ophone 完全开发讲义 上那个悬浮的activity也很好，设置android：theme属性。
activity的代码：
import android.app.Activity;import android.os.Bundle;import android.view.Gravity;import android.view.MotionEvent;import android.view.View;import android.view.ViewGroup;import android.widget.Button;import android.widget.ImageView;import android.widget.PopupWindow;import android.widget.PopupWindow.OnDismissListener;import android.widget.TextView;import android.widget.Toast;public class TestPopwindow extends Activity { /** Called when the activity is first created. */private TextView txChange=null;private Button btShowWindow=null;private PopupWindow pop=null; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); View popview=this.getLayoutInflater().inflate(R.layout.popwindow,null);pop=new PopupWindow(popview,ViewGroup.LayoutParams.WRAP_CONTENT,ViewGroup.LayoutParams.WRAP_CONTENT,true);pop.setAnimationStyle(android.R.anim.slide_in_left);pop.setBackgroundDrawable(getResources().getDrawable(android.R.drawable.screen_background_light));pop.setOnDismissListener(new OnDismissListener()//消失监听{public void onDismiss() {// TODO Auto-generated method stubSystem.out.println("TestPopWindow.pop.OnDismissListener");Toast.makeText(TestPopwindow.this,"悬浮消失",Toast.LENGTH_SHORT).show();}});//pop.setTouchable(true);//设置pop是否可以点击，默认是true，为false时点击屏幕响应的是屏幕的,里面的控件无焦点//pop.setTouchInterceptor(new OnTouchListener()//pop的touchable设为true，监听发生在pop上的触屏事件,在屏幕上的事件也是可以响应的//{////public boolean onTouch(View v, MotionEvent event) {//// TODO Auto-generated method stub//System.out.println("TestPopWindow.pop.OnTouchInterceptor");////pop.dismiss();//return true;//}////});pop.setOutsideTouchable(true);//默认是false，控制pop是否监听pop以外的触屏事件。这个方法在pop可触，并且no focusable时有意义。这意味着在pop外点击屏幕， findViews();//触屏是在后面的activity响应的。在pop内touch无效，在外时 pop dismiss,按钮可点 btShowWindow.setOnClickListener(ShowWindow); }@Overridepublic boolean onTouchEvent(MotionEvent event) {//在popwindow出现时不触发，他也是有焦点的,//popwindow不设置setOutsideTouchable(false)，setTouchable(true)，setTouchInterceptor,点击popwindow外部，消失// TODO Auto-generated method stubSystem.out.println("TestPopWindow.onTouchEvent");return super.onTouchEvent(event);}Button.OnClickListener ShowWindow=new Button.OnClickListener(){public void onClick(View v) {// TODO Auto-generated method stubshowPopWindow();} }; private void showPopWindow() {// TODO Auto-generated method stub View popcontentview=pop.getContentView(); TextView tvinfor=(TextView) popcontentview.findViewById(R.id.textview_popwindow_showinfo); tvinfor.setText("测试窗口"); ImageView iview=(ImageView) popcontentview.findViewById(R.id.imageview_popwindow_showimage); iview.setImageResource(R.drawable.android11); Button btTest=(Button) popcontentview.findViewById(R.id.button_popwindow_showinfo); btTest.requestFocus();//pop set touchable 为true，并且pop 有焦点，显示点击效果 pop.setFocusable(true); System.out.println("btTest.hasFocus()========"+btTest.hasFocus());//popupwindow中的按钮无焦点 System.out.println("pop.isFocusable()========"+pop.isFocusable());//输出 true System.out.println("TestPopwindow.this.hasWindowFocus()===="+TestPopwindow.this.hasWindowFocus());System.out.println("TestPopwindow.this.pop.isFocusable()===="+TestPopwindow.this.pop.isFocusable());// btTest.hasFocus(); btTest.setOnClickListener(new Button.OnClickListener() {public void onClick(View v) {// TODO Auto-generated method stubTextView poptextview=(TextView)pop.getContentView().findViewById(R.id.textview_popwindow_showinfo);System.out.println("TestPopwindow.pop.btTest.click.v===="+v.getId());poptextview.setText("after click");txChange.setText("have changed");//pop.dismiss();} });pop.setWidth(200);//设置这个悬浮的宽高尺寸pop.setHeight(300);pop.setAnimationStyle(R.style.PopupAnimation);//设置出现和消失的动画pop.showAtLocation(findViewById(R.id.linearlayout_main_show),Gravity.CENTER|Gravity.CENTER, 0,0);}private void findViews() {// TODO Auto-generated method stubbtShowWindow=(Button)findViewById(R.id.button_main_showwindow);txChange=(TextView)findViewById(R.id.textview_main_showchange);}}<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/linearlayout_popwindow_view" android:background="#b0000000" android:orientation="vertical" android:layout_width="wrap_content" android:layout_height="wrap_content"> <ImageView android:id="@+id/imageview_popwindow_showimage" android:src="@drawable/icon" android:layout_marginLeft="10dip" android:layout_marginTop="30dip" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <TextView android:id="@+id/textview_popwindow_showinfo" android:text="information" android:textSize="18dip" android:layout_marginTop="15dip" android:layout_width="fill_parent" android:layout_height="wrap_content" /> <Button android:id="@+id/button_popwindow_showinfo" android:text="buttontest" android:textSize="18dip" android:layout_marginTop="15dip" android:layout_width="fill_parent" android:layout_height="wrap_content" /></LinearLayout>