求源码--点击一下按钮，出现一个半透明的ListView，第二次点击使其消失?

Question

因为我想实现一个查找功能：所以想点击一个按钮出一个半透明的listView（显示查找每个结果），再点击一次此按钮，listView消失？
求源码

Answer 1

main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"       
  android:orientation="vertical"         android:layout_width="match_parent"       
    android:layout_height="match_parent"         android:paddingLeft="8dp"        
     android:paddingRight="8dp">     
     <TextView android:id="@+id/Textt"  android:layout_width="wrap_content"  
      android:layout_height="wrap_content"   ></TextView>
     <ListView android:id="@android:id/list"               android:layout_width="fill_parent"     
               android:layout_height="fill_parent"               android:background="#00FF00"     
                         android:layout_weight="1"               android:drawSelectorOnTop="false"/> 
      <TextView android:id="@android:id/empty"          
                    android:layout_width="match_parent"           
                android:layout_height="match_parent"            
    android:background="#FF0000"               android:text="No data"/>
    <Button android:id="@+id/buttton1" android:text="text" 
    android:layout_width="wrap_content"  android:layout_height="wrap_content"/>
 </LinearLayout>list_item.xml
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
          android:layout_width="fill_parent"
          android:layout_height="fill_parent"
          android:padding="10dp"
          android:textSize="16sp"/>public class HelloListView extends ListActivity {
ListView lv;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
   setContentView(R.layout.main);
setListAdapter(new ArrayAdapter<String>(this, R.layout.list_item, COUNTRIES));
String[] countries=getResources().getStringArray(R.array.countries_array);
TextView txt=(TextView)findViewById(R.id.Textt);
txt.setText(R.string.text);
 lv=getListView();

lv.setOnItemClickListener(new OnItemClickListener() { @Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// TODO Auto-generated method stub
Toast.makeText(getApplicationContext(), ((TextView)view).getText(), Toast.LENGTH_SHORT).show();
//lv.setVisibility(false);

}


});
Button button=(Button)findViewById(R.id.buttton1);
button.setOnClickListener(clicklistener);

}
OnClickListener clicklistener=new OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if(lv.isShown())
lv.setVisibility(View.GONE);
else
lv.setVisibility(View.VISIBLE);
}
}; static final String[] COUNTRIES = new String[] {    "Afghanistan", "Albania", "Algeria", "American Samoa",
"Andorra",    "Angola", "Anguilla", "Antarctica", 
"Antigua and Barbuda", "Argentina",    "Armenia", "Aruba",
"Australia", "Austria", "Azerbaijan",    "Bahrain", "Bangladesh", 
"Barbados", "Belarus", "Belgium",    "Belize", "Benin", "Bermuda", 
  };}
我的目的让lv覆盖txt，lv是半透明的，点击按钮后能够使lv消失或者显示

Answer 2

可以设置半透明啊 setAlpha（）里面写上数值。。

Answer 3

用ViewFlipper实现动画效果！当点击按钮的时候切换动画！其实ViewFlipper是继承自FrameLayout的！package com.bb;import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.GestureDetector;
import android.view.GestureDetector.OnGestureListener;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
import android.view.animation.AnimationUtils;
import android.widget.Button;
import android.widget.TextView;
import android.widget.ViewFlipper;public class ff extends Activity  implements OnGestureListener {
    
 private GestureDetector detector;  
 private ViewFlipper flipper;
 private int flag = 0;
      
    /** Called when the activity is first created. */  
    @Override  
    public void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.main);  
          
        flipper = (ViewFlipper) this.findViewById(R.id.ViewFlipper01);  
          
        flipper.addView(addButtonByText("按钮"),new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));  
        
        this.flipper.addView(addTextByText("文本框"),new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
        
        detector = new GestureDetector(this);  
    }  
      
    public View addButtonByText(String text){  
        Button btn = new Button(this);    
        btn.setText(text);    
        return btn;    
    }    
    public View addTextByText(String text){  
        TextView tv = new TextView(this);    
        tv.setText(text);    
        tv.setGravity(1);    
        return tv;    
    }         
  @Override  
  public boolean onTouchEvent(MotionEvent event) {  
      Log.i("Fling", "Activity onTouchEvent!");  
      return this.detector.onTouchEvent(event);  
  }  
public boolean onDown(MotionEvent arg0) {
// TODO Auto-generated method stub
return false;
} public boolean onFling(MotionEvent e1, MotionEvent e2, float arg2,
float arg3) {
Log.i("Fling", "Fling Happened!");  
        if (e1.getX() - e2.getX() > 10) {  
            this.flipper.setInAnimation(AnimationUtils.loadAnimation(this,R.anim.push_left_in));  
            this.flipper.setOutAnimation(AnimationUtils.loadAnimation(this,R.anim.push_left_out));    
            if (flag % 2 == 0)
                this.flipper.showNext();
            else
             this.flipper.showPrevious();
            flag = (flag + 1) % 2;
            return true;  
        } else if (e1.getX() - e2.getX() < -10) {  
            this.flipper.setInAnimation(AnimationUtils.loadAnimation(this,R.anim.push_right_in));  
            this.flipper.setOutAnimation(AnimationUtils.loadAnimation(this,R.anim.push_right_out));  
            if (flag % 2 == 0)
                this.flipper.showPrevious();
            else
             this.flipper.showNext();
            flag = (flag + 1) % 2;
            return true;  
        }  
        return true;   } public void onLongPress(MotionEvent arg0) {
// TODO Auto-generated method stub

} public boolean onScroll(MotionEvent arg0, MotionEvent arg1, float arg2,
float arg3) {
// TODO Auto-generated method stub
return false;
} public void onShowPress(MotionEvent arg0) {
// TODO Auto-generated method stub

} public boolean onSingleTapUp(MotionEvent arg0) {
// TODO Auto-generated method stub
return false;
}
}
main.xml:<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<ViewFlipper
    android:layout_height="fill_parent"
    android:layout_width="fill_parent"
    android:id="@+id/ViewFlipper01"
    >
    
</ViewFlipper 
</LinearLayout>下面是四个动画xml，放到anim文件夹下
push_left_in.xml<?xml version="1.0" encoding="utf-8"?>  
<set xmlns:android="http://schemas.android.com/apk/res/android">  
    <translate android:fromXDelta="100%p" android:toXDelta="0"  
        android:duration="500" />  
    <alpha android:fromAlpha="0.1" android:toAlpha="1.0"  
        android:duration="500" />  
</set>
push_left_out.xml<?xml version="1.0" encoding="utf-8"?>  
<set xmlns:android="http://schemas.android.com/apk/res/android">  
    <translate android:fromXDelta="0" android:toXDelta="-100%p"  
        android:duration="500" />  
    <alpha android:fromAlpha="1.0" android:toAlpha="0.1"  
        android:duration="500" />  
</set>  
push_right_in.xml<?xml version="1.0" encoding="utf-8"?>  
<set xmlns:android="http://schemas.android.com/apk/res/android">  
    <translate android:fromXDelta="-100%p" android:toXDelta="0"  
        android:duration="500" />  
    <alpha android:fromAlpha="0.1" android:toAlpha="1.0"  
        android:duration="500" />  
</set>
push_right_out.xml<?xml version="1.0" encoding="utf-8"?>  
<set xmlns:android="http://schemas.android.com/apk/res/android">  
    <translate android:fromXDelta="0" android:toXDelta="100%p"  
        android:duration="500" />  
    <alpha android:fromAlpha="1.0" android:toAlpha="0.1"  
        android:duration="500" />  
</set>

Answer 4

看下可否这是透明度！解决第一个半透明问题！至于你的第二个，点击一个半透明，单击两下listView消失，你可以根据奇偶来判断！

Answer 5

非常感谢，但
ViewFlipper  :"Only one child is shown at a time",请问如何实现，listView能够以半透明白形式覆盖下面的TextView,而不是只显示一个？