如何在imageview上設置imageview？

Question

我有一個動態imageview的相機圖片，我的問題是我想在我選擇的imageview上設置刻度線。請幫幫我。

@Override 
protected void onCreate(Bundle savedInstanceState) 
{ 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.headshotallphoto); 
    dbHeadshot = new DataHelperHeadshot(this); 

    DisplayMetrics displaymetrics = new DisplayMetrics();  
    getWindowManager().getDefaultDisplay().getMetrics(displaymetrics);  
    ht = displaymetrics.heightPixels;  
    wt = displaymetrics.widthPixels;   

    GridView imagegrid = (GridView) findViewById(R.id.PhoneImageGrid); 
    imagegrid.setAdapter(new ImageAdapter(getApplicationContext(),bmp)); 
    imagegrid.setOnItemClickListener(this); 
} 

public class ImageAdapter extends BaseAdapter 
{ 
    private Context mContext; 
    private Bitmap[] mImageArray; 

    public ImageAdapter(Context c, Bitmap[] imgArray) 
    { 
      mContext = c; 
      mImageArray = imgArray; 

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

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

    public View getView(int position,View convertView,ViewGroup parent) 
    { 
     System.gc(); 
     ImageView i = null ;//= new ImageView(mContext.getApplicationContext()); 

     if (convertView == null) 
     {    
      i = new ImageView(mContext); 
      i.setLayoutParams(new GridView.LayoutParams(92,92)); 
      i.setScaleType(ImageView.ScaleType.CENTER_CROP); 
      i.setPadding(8, 8, 8, 8); 
      i.setImageBitmap(mImageArray[position]);    
     } 
     else 
      i = (ImageView) convertView;   
     return i; 
    } 
} 

public Bitmap decodeFile(String filePath) 
{ 
    BitmapFactory.Options o = new BitmapFactory.Options(); 
    o.inJustDecodeBounds = true; 
    BitmapFactory.decodeFile(filePath, o); 

    // The new size we want to scale to 
    final int REQUIRED_SIZE = 100; 
    final int H = 50; 

    // Find the correct scale value. It should be the power of 2. 
    int width_tmp = o.outWidth, height_tmp = o.outHeight; 
    int scale = 1; 
    while (true) { 
     if (width_tmp < REQUIRED_SIZE && height_tmp < H) 
      break; 
     width_tmp /= 2; 
     height_tmp /= 2; 
     scale *= 2; 
    } 
    // Decode with inSampleSize 
    BitmapFactory.Options o2 = new BitmapFactory.Options(); 
    o2.inSampleSize = scale;   
    bitmap = BitmapFactory.decodeFile(filePath, o2); 
    return bitmap; 
} 

public void onItemClick(AdapterView<?> a, View v, int position, long id) 
{ 
    ImageView tickmark = new ImageView(this); 
    tickmark.setBackgroundResource(R.drawable.imgredselectmark); 
} 

Answer 1

使用框架佈局：

<FrameLayout 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:orientation="vertical" 
     android:padding="5dip"> 
     <ImageView 
    android:id="@+id/image_check" 
      android:orientation="vertical" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
      android:src="@drawable/tick"/> 
       <ImageView 
       android:id="@+id/imageview" 
       android:layout_width="fill_parent" 
       android:layout_height="wrap_content" 
       android:src="@drawable/image"> 

在GridView的

gridview.setOnItemClickListener(new OnItemClickListener(){ 

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

@Override 
public void onClick(View v) { 
// TODO Auto-generated method stub 
if(view.findViewById(R.id.image_check).getVisibility==ImageView.VISIBLE) 
    { 
view.findViewById(R.id.image_check).setVisibility(ImageView.VISIBLE) 
    } 
    else 
    { 
view.findViewById(R.id.image_check).setVisibility(ImageView.GONE) 
    } 

} 
} 
}); 

Answer 2

您可以使用兩個圖像的相對佈局，這樣兩個圖像都可以顯示相同的位置，然後單擊，您可以設置可見性刻度圖像。