的Android格和巴顿OnItemclick

Question

这里是我buttonAdapter类，我认为是准确的：

package com.example.test; 

import android.content.Context; 
import android.graphics.Color; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.BaseAdapter; 
import android.widget.Button; 
import android.widget.GridView; 

public class ButtonAdapter extends BaseAdapter { 
    private Context mContext; 
    public String [] fName = { "File 1", "File 2", "Roflcopters"}; 

    // Gets the context so it can be used later 
    public ButtonAdapter(Context c) { mContext = c; } 

    // Total number of things contained within the adapter 
    public int getCount() { return 8; } 

    // Require for structure, not really used in my code. 
    public Object getItem (int position) { return null; } 

    // Require for structure, not really used in my code. Can be used to get the id of an item in the adapter for manual control. 
    public long getItemId (int position) { return position; } 

    public View getView (int position, View convertView, ViewGroup parent){  
     Button btn;   
     if (convertView == null) {  // if it's not recycled, initialize some attributes  
      btn = new Button (mContext); 
      btn.setLayoutParams (new GridView.LayoutParams (190, 190)); 
      btn.setPadding (1, 1, 1, 1);  
     } else {   
      btn = (Button) convertView; 
     }  
     // btn.setText(filesnames[position]); 
     // filenames is an array of strings  
     //btn.setTextColor (Color.WHITE); 
     //btn.setBackgroundResource (R.drawable.sample_2); 
     //btn.setBackgroundColor (Color.BLACK);  
     btn.setHighlightColor(Color.GREEN);  
     btn.setId (position); 

     return btn; 
    } 
} 

这里是我的家课。我无法获取onItemClick来解决问题。我在做什么错在这里：

package com.example.test; 

import android.app.Activity; 
import android.content.Intent; 
import android.os.Bundle; 
import android.view.Menu; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.widget.AdapterView; 
import android.widget.AdapterView.OnItemClickListener; 
import android.widget.GridView; 
import android.widget.Toast; 

public class home extends Activity implements OnItemClickListener { 

    public final static String EXTRA_MESSAGE1 = "com.example.text.MESSAGE"; 

    public void onCreate (Bundle savedInstanceState) {  
     super.onCreate(savedInstanceState);  
     setContentView (R.layout.activity_home);  

     GridView gridview = (GridView) findViewById (R.id.gridview); 
     gridview.setAdapter (new ButtonAdapter (this));  

     /*gridview.setOnItemClickListener (new OnItemClickListener() { 
      public void onItemClick (AdapterView <?> parent, View v, int position, long id) {   
      Toast.makeText (home.this, "" + position, Toast.LENGTH_LONG).show(); 
      Intent intent = new Intent (this, alarm.class);  
      String message = "Position:" + position;    
      intent.putExtra(EXTRA_MESSAGE1, message);   
      startActivity (intent);   
      }  
     }); 
    * */  
    } 

    @Override 
    public void onItemClick (AdapterView <?> parent, View v, int position, long id) { 
     Intent intent = new Intent (this, alarm.class); 
     String message = "Position:" + position;   
     intent.putExtra(EXTRA_MESSAGE1, message);   
     startActivity (intent); 
    } 
} 

的onItemClick不工作，也不做注释的“setOnItemClickListener”时，不评论它和“onItemClick”的评论。我究竟做错了什么？

Answer 1

如果GridView, ListView有点击能够控制像BUtton那么onItemClick不会被解雇。
您需要在适配器的getView方法中实现Button Click listener。

像

public View getView(int position, View convertView, ViewGroup parent) { 
    Button btn; 
    if (convertView == null) { // if it's not recycled, initialize some 
           // attributes btn = new Button (mContext); 
     btn.setLayoutParams(new GridView.LayoutParams(190, 190)); 
     btn.setPadding(1, 1, 1, 1); 
    } else { 
     btn = (Button) convertView; 
    } // btn.setText(filesnames[position]); // filenames is an array of 
     // strings //btn.setTextColor (Color.WHITE); 
    // btn.setBackgroundResource (R.drawable.sample_2); 
    // btn.setBackgroundColor (Color.BLACK); 
    btn.setHighlightColor(Color.GREEN); 
    btn.setId(position); 
    btn.setOnClickListener(new OnClickListener() { 

     @Override 
     public void onClick(View v) { 
      // TODO Handle the click here 

     } 
    }); 
    return btn; 

} 

Answer 2

我测试过了Set Button.onClickListener（）（在API 15）将不会解决问题。

因此，GridView不会触发onItemClick，如果它包含可点击意见。

您可以使用ImageView代替Button。

Answer 3

我有同样的问题，当我试图执行onitemclick在gridview充满按钮。由于该按钮正在偷取gridview上每个空间的焦点，因此您必须提供充气按钮android:focusable="false"。但是，该按钮占据了网格中的几乎整个空间，因此您必须单击按钮的边缘以触发onitemclick回拨。我建议你可以设置onclick或使用图像并将其设计为一个按钮。

Answer 4

可以在GridView的项目父布局中加入这一行：

android:descendantFocusability="blocksDescendants" 

然后onItemClickListener.onItemClick()当你在哪个OnClickListener已经为他们单独定义子视图挖掘将不会触发。