Android圖庫獲取圖像名稱

Question

在下面的代碼中，我創建了一個圖庫對象，並且還包含圖像視圖，點擊圖像如何獲取圖像名稱並將其加載到圖像視圖中。我還包括main.xml

package HelloGallery.com; 

import android.app.Activity; 
import android.content.Context; 
import android.content.res.TypedArray; 
import android.os.Bundle; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.AdapterView; 
import android.widget.AdapterView.OnItemClickListener; 
import android.widget.BaseAdapter; 
import android.widget.Gallery; 
import android.widget.ImageView; 
import android.widget.Toast; 

public class HelloGalleryActivity extends Activity { 
/** Called when the activity is first created. */ 
@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 


    final ImageView iv=(ImageView) findViewById(R.id.imageView1); 
    iv.setVisibility(View.INVISIBLE); 



    Gallery g = (Gallery) findViewById(R.id.gallery); 
    g.setAdapter(new ImageAdapter(this)); 

    g.setOnItemClickListener(new OnItemClickListener() { 
     public void onItemClick(AdapterView parent, View v, int position, long id) { 
      Toast.makeText(HelloGalleryActivity.this, "" + position, Toast.LENGTH_SHORT).show(); 
      iv.setVisibility(View.VISIBLE); 
      iv.setsource("android:src="@drawable/"+imagename); //how to do this 



     } 
    }); 

} 
public class ImageAdapter extends BaseAdapter { 
    int mGalleryItemBackground; 
    private Context mContext; 

    private Integer[] mImageIds = { 
      R.drawable.sample_1, 
      R.drawable.sample_2, 
      R.drawable.sample_3 

    }; 

    public ImageAdapter(Context c) { 
     mContext = c; 
     TypedArray a = obtainStyledAttributes(R.styleable.HelloGallery); 
     mGalleryItemBackground = a.getResourceId(
       R.styleable.HelloGallery_android_galleryItemBackground, 0); 
     a.recycle(); 
    } 

    public int getCount() { 
     return mImageIds.length; 
    } 

    public Object getItem(int position) { 
     return position; 
    } 

    public long getItemId(int position) { 
     return position; 
    } 

    public View getView(int position, View convertView, ViewGroup parent) { 
     ImageView i = new ImageView(mContext); 

     i.setImageResource(mImageIds[position]); 
     i.setLayoutParams(new Gallery.LayoutParams(150, 100)); 
     i.setScaleType(ImageView.ScaleType.FIT_XY); 
     i.setBackgroundResource(mGalleryItemBackground); 

     return i; 
    } 

/* public View getView(int arg0, View arg1, ViewGroup arg2) { 
     // TODO Auto-generated method stub 
     return null; 
    }*/ 
} 
} 

Main.mxml

<?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" 
> 
<TextView 
android:layout_width="fill_parent" 
android:layout_height="wrap_content" 
android:text="@string/hello" 
/> 
<Gallery xmlns:android="http://schemas.android.com/apk/res/android" 
android:id="@+id/gallery" 
android:layout_width="fill_parent" 
android:layout_height="wrap_content" 
/> 
<ImageView android:layout_width="wrap_content" android:id="@+id/imageView1" android:layout_height="wrap_content" ></ImageView> 

</LinearLayout> 

Answer 1

試試這個，

Drawable d=getResources().getDrawable(R.drawable.icon); 
iv.setImageDrawable(d);