如何让我的图像发光效果？

我创建了简单的gridview应用程序。现在，我希望为我的图像创建发光效果，请帮助我如何为我的网格图像创建发光效果？如果有谁知道，请给我一些想法和示例代码....如何让我的图像发光效果？

这是我目前的截图：

enter image description here

，这是我预期的辉光效果截图： enter image description here

源代码：

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"> 
<TextView 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="@string/hello" /> 
<GridView 
    android:id="@+id/gridview" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:numColumns="auto_fit" 
    android:verticalSpacing="10dp" 
    android:horizontalSpacing="10dp" 
    android:columnWidth="90dp" 
    android:stretchMode="columnWidth" 
    android:gravity="center" /> 
</LinearLayout>

GridviewExampleActivity.java

public class GridviewExampleActivity extends Activity 
{ 

public void onCreate(Bundle savedInstanceState){ 
     super.onCreate(savedInstanceState); 

     setContentView(R.layout.main); 

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

public class ImageAdapter extends BaseAdapter{ 
private Context mContext; 

public ImageAdapter(Context c){ 
mContext = c; 
} 

public int getCount() 
{ 

    return mThumbIds.length; 
} 

public Object getItem(int position) 
{ 
    return null; 

} 

public long getItemId(int position) 
{ 
return 0; 
           } 
// create a new ImageView for each item referenced by the Adapter 

public View getView(int position, View convertView, ViewGroup parent) 
{ 
ImageView imageView; 

if (convertView == null) 
{ 
imageView = new ImageView(mContext); 
imageView.setLayoutParams(new GridView.LayoutParams(85, 85)); 
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP); 
imageView.setPadding(8, 8, 8, 8); 
} 
else 
{ 
imageView = (ImageView) convertView; 
               } 
imageView.setImageResource(R.drawable.icon); 

return imageView; 
           } 
private Integer[] mThumbIds = { 
     R.drawable.icon, R.drawable.icon, 
     R.drawable.icon, R.drawable.icon, 
     R.drawable.icon, R.drawable.icon, 
     R.drawable.icon, R.drawable.icon, 
     R.drawable.icon, R.drawable.icon}; 
} 

}

发光效果的屏幕截图： [在这里输入的形象描述] [3]

来源

2012-05-14 balaji

您可以使用下面的代码来使每个在自定义视图图像焕发

图像适配器的getView（）函数应该是这样的：

public View getView(int position, View convertView, ViewGroup parent) 
{ 
ImageView imageView; 

if (convertView == null) 
{ 
imageView = new ImageView(mContext); 
imageView.setLayoutParams(new GridView.LayoutParams(85, 85)); 
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP); 
imageView.setPadding(8, 8, 8, 8); 
} 
else 
{ 
    imageView = (ImageView) convertView; 
    Bitmap Image=BitmapFactory.decodeResource(mContext.getResources(),mThumbIds[position]); 
     Image=Image.copy(Bitmap.Config.ARGB_8888,true); 
     Paint paint=new Paint(); 
     paint.setDither(true); 
     paint.setFilterBitmap(true); 
     Bitmap glow=BitmapFactory.decodeResource(mContext.getResources(), R.drawable.glow_image); 
     Bitmap bitmap=Bitmap.createBitmap(Image.getWidth(),Image.getHeight(), Config.ARGB_8888); 
     Canvas canvas=new Canvas(bitmap); 

     canvas.drawBitmap(glow, new Rect(0,0,glow.getWidth(),glow.getHeight()), new Rect(0,0,Image.getWidth(),Image.getHeight()),paint); 
     canvas.drawBitmap(Image, new Rect(0,0,Image.getWidth(),Image.getHeight()), new Rect(0+5,0+5,Image.getWidth()-5,Image.getHeight()-5),paint); 



     imageView.setImageBitmap(bitmap); 


    return imageView; 
    }

R.drawable.glow_image是你能为成长效果图像使用PNG图像

Glow.png

来源

2012-05-14 10:28:10

检查这个link ...它的自定义选择

或者干脆ü！可以使用这个

<selector xmlns:android="http://schemas.android.com/apk/res/android"> 
    <item android:state_pressed="true" android:drawable="@drawable/pressedback" /> 
    <item android:state_focused="true" android:drawable="@drawable/focusedback" /> 
    <item android:state_selected="true" android:drawable="@drawable/focusedback" /> 
</selector>

来源

2012-05-14 09:18:43

如何让我的图像发光效果？

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