cách áp dụng trình xử lý sự kiện nhấp chuột vào hình ảnh trong android

Question

tôi muốn áp dụng sự kiện onClickListener cho một imageView, làm cách nào để thực hiện điều này? bất cứ ai có thể cung cấp cho tôi với một số ví dụ mã nguồn

Answer 1

ImageView img = (ImageView) findViewById(R.id.myImageId); 
img.setOnClickListener(new OnClickListener() { 
    public void onClick(View v) { 
     // your code here 
    } 
}); 

Answer 2

Trong xml:

<ImageView 
android:clickable="true" 
android:onClick="imageClick" 
android:src="@drawable/myImage"> 
</ImageView> 

Trong mã

public class Test extends Activity { 
    ........ 
    ........ 
public void imageClick(View view) { 
    //Implement image click function 
} 

Answer 3

Hãy thử ví dụ này.

activity_main.xml:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    tools:context=".MainActivity" > 

<GridView 
    android:numColumns="auto_fit" 
    android:gravity="center" 
    android:columnWidth="100dp" 
    android:stretchMode="columnWidth" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:id="@+id/grid" 
    android:background="#fff7ff" 
    /> 

    </LinearLayout> 

grid_single.xml:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:padding="5dp" > 

    <ImageView 
     android:id="@+id/grid_image" 
     android:layout_width="60dp" 
     android:layout_height="60dp" 

     > 
    </ImageView> 

    <TextView 
     android:id="@+id/grid_text" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_marginTop="15dp" 
     android:textSize="9sp" 
     android:textColor="#3a0fff"> 
    </TextView> 

</LinearLayout> 

CustomGrid.java:

package com.example.lalit.gridtest; 

import android.content.Context; 
     import android.view.LayoutInflater; 
     import android.view.View; 
     import android.view.ViewGroup; 
     import android.widget.BaseAdapter; 
     import android.widget.ImageView; 
     import android.widget.TextView; 

public class CustomGrid extends BaseAdapter { 
    private Context mContext; 
    private final String[] web; 
    private final int[] Imageid; 

    public CustomGrid(Context c, String[] web, int[] Imageid) { 
     mContext = c; 
     this.Imageid = Imageid; 
     this.web = web; 
    } 

    @Override 
    public int getCount() { 
     // TODO Auto-generated method stub 
     return web.length; 
    } 

    @Override 
    public Object getItem(int position) { 
     // TODO Auto-generated method stub 
     return null; 
    } 

    @Override 
    public long getItemId(int position) { 
     // TODO Auto-generated method stub 
     return 0; 
    } 

    @Override 
    public View getView(int position, View convertView, ViewGroup parent) { 
     // TODO Auto-generated method stub 
     View grid; 
     LayoutInflater inflater = (LayoutInflater) mContext 
       .getSystemService(Context.LAYOUT_INFLATER_SERVICE); 

     if (convertView == null) { 

      grid = new View(mContext); 
      grid = inflater.inflate(R.layout.grid_single, null); 
      TextView textView = (TextView) grid.findViewById(R.id.grid_text); 
      ImageView imageView = (ImageView) grid.findViewById(R.id.grid_image); 
      textView.setText(web[position]); 
      imageView.setImageResource(Imageid[position]); 
     } else { 
      grid = (View) convertView; 
     } 

     return grid; 
    } 
} 

MainActivity.java:

package com.example.lalit.gridtest; 

import android.content.Intent; 
import android.net.Uri; 
import android.os.Bundle; 
import android.app.Activity; 
import android.view.View; 
import android.widget.AdapterView; 
import android.widget.GridView; 
import android.widget.ImageView; 
import android.widget.Toast; 

public class MainActivity extends Activity { 
    GridView grid; 
    String[] web = { 
      "Mom", 
      "Mahendra", 
      "Narayan", 
      "Bhai", 
      "Deepak", 
      "Sanjay", 
      "Navdeep", 
      "Lovesh", 


    }; 
    int[] imageId = { 
      R.drawable.ic_launcher, 
      R.drawable.ic_launcher, 
      R.drawable.ic_launcher, 
      R.drawable.ic_launcher, 
      R.drawable.ic_launcher, 
      R.drawable.ic_launcher, 
      R.drawable.ic_launcher, 
      R.drawable.ic_launcher, 
      R.drawable.ic_launcher, 
      R.drawable.ic_launcher, 
      R.drawable.ic_launcher, 
      R.drawable.ic_launcher, 
      R.drawable.ic_launcher, 
      R.drawable.ic_launcher, 
      R.drawable.ic_launcher 

    }; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     final CustomGrid adapter = new CustomGrid(MainActivity.this, web, imageId); 
     grid = (GridView) findViewById(R.id.grid); 
     grid.setAdapter(adapter); 
     grid.setOnItemClickListener(new AdapterView.OnItemClickListener() { 

      @Override 
      public void onItemClick(AdapterView<?> parent, View view, 
            int position, long id){ 

       if (web[position].toString().equals("Mom")) { 
        try { 
         String uri ="te:"+ "9009388988"; 

         Intent callIntent = new Intent(Intent.ACTION_CALL, Uri.parse(uri)); 
         startActivity(callIntent); 
        } catch (Exception e) { 
         Toast.makeText(getApplicationContext(), "Your call has failed...", 
           Toast.LENGTH_LONG).show(); 
         e.printStackTrace(); 

        } 
       } 


        if (web[position].toString().equals("Mahendra")) { 
         try { 
          String uri = "tel:" + "99669660948"; 

          Intent callIntent = new Intent(Intent.ACTION_CALL, Uri.parse(uri)); 
          startActivity(callIntent); 
         } catch (Exception e) { 
          Toast.makeText(getApplicationContext(), "Your call has failed...", 
            Toast.LENGTH_LONG).show(); 
          e.printStackTrace(); 

         } 
        } 


         if(web[position].toString().equals("Narayan")){ 

        try { 
         String uri = "tel:" + "8889115906"; 

         Intent callIntent = new Intent(Intent.ACTION_CALL, Uri.parse(uri)); 
         startActivity(callIntent); 
        } catch (Exception e) { 
         Toast.makeText(getApplicationContext(), "Your call has failed...", 
           Toast.LENGTH_LONG).show(); 
         e.printStackTrace(); 

        } 


      } 
       if(web[position].toString().equals("Bhai")){ 

        try { 
         String uri = "tel:" + "9893352005"; 

         Intent callIntent = new Intent(Intent.ACTION_CALL, Uri.parse(uri)); 
         startActivity(callIntent); 
        } catch (Exception e) { 
         Toast.makeText(getApplicationContext(), "Your call has failed...", 
           Toast.LENGTH_LONG).show(); 
         e.printStackTrace(); 

        } 


       } 

       if(web[position].toString().equals("Deepak")){ 

        try { 
         String uri = "tel:" + "7869302868"; 

         Intent callIntent = new Intent(Intent.ACTION_CALL, Uri.parse(uri)); 
         startActivity(callIntent); 
        } catch (Exception e) { 
         Toast.makeText(getApplicationContext(), "Your call has failed...", 
           Toast.LENGTH_LONG).show(); 
         e.printStackTrace(); 

        } 


       } 


       if(web[position].toString().equals("Sanjay")){ 

        try { 
         String uri = "tel:" + "9584124849"; 

         Intent callIntent = new Intent(Intent.ACTION_CALL, Uri.parse(uri)); 
         startActivity(callIntent); 
        } catch (Exception e) { 
         Toast.makeText(getApplicationContext(), "Your call has failed...", 
           Toast.LENGTH_LONG).show(); 
         e.printStackTrace(); 

        } 


       } 
       if(web[position].toString().equals("Navdeep")){ 

        try { 
         String uri = "tel:" + "8602475687"; 

         Intent callIntent = new Intent(Intent.ACTION_CALL, Uri.parse(uri)); 
         startActivity(callIntent); 
        } catch (Exception e) { 
         Toast.makeText(getApplicationContext(), "Your call has failed...", 
           Toast.LENGTH_LONG).show(); 
         e.printStackTrace(); 

        } 


       } 
       if(web[position].toString().equals("Lovesh")){ 

        try { 
         String uri = "tel:" + "8871512449"; 

         Intent callIntent = new Intent(Intent.ACTION_CALL, Uri.parse(uri)); 
         startActivity(callIntent); 
        } catch (Exception e) { 
         Toast.makeText(getApplicationContext(), "Your call has failed...", 
           Toast.LENGTH_LONG).show(); 
         e.printStackTrace(); 

        } 


       } 

       } 



     }); 

    } 

    } 

AndroidManifest.xml:

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
    package="com.example.lalit.gridtest" > 
    <uses-permission android:name="android.permission.CALL_PHONE" /> 
    <application 
     android:allowBackup="true" 
     android:icon="@drawable/ic_launcher" 
     android:label="@string/app_name" 
     android:theme="@style/AppTheme" > 
     <activity 
      android:name=".MainActivity" 
      android:label="@string/app_name" > 
      <intent-filter> 
       <action android:name="android.intent.action.MAIN" /> 

       <category android:name="android.intent.category.LAUNCHER" /> 
      </intent-filter> 
     </activity> 
    </application> 

</manifest>