Java实现图片倒影的源码实例内容

 更新时间:2019年09月03日 16:26:34   作者:anemone27   我要评论
在本篇文章里小编给大家整理的是关于Java实现图片倒影的源码以及相关知识点,有需要的朋友们学习下。

把做工程过程常用的一些代码段做个记录,下面代码是关于Java实现图片倒影的的代码,应该对大家有较大用处。

 

public class ButtonImageActivity extends Activity {
private ImageView image_btn;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
image_btn=(ImageView)findViewById(R.id.image_btn);
Bitmap bitmap =((BitmapDrawable)getResources().getDrawable(R.drawable.image_btn)).getBitmap();
image_btn.setImageBitmap(createReflectedImage(bitmap));
image_btn.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
}
});
}
private Bitmap createReflectedImage(Bitmap originalBitmap) { 
final int reflectionGap = 4; 
int width = originalBitmap.getWidth(); 
int height = originalBitmap.getHeight(); 
Matrix matrix = new Matrix(); 
matrix.preScale(1, -1); 
Bitmap reflectionBitmap = Bitmap.createBitmap(originalBitmap, 0, 
height / 2, width, height / 2, matrix, false); 
Bitmap withReflectionBitmap = Bitmap.createBitmap(width, (height 
+ height / 2 + reflectionGap), Config.ARGB_8888); 
Canvas canvas = new Canvas(withReflectionBitmap); 
canvas.drawBitmap(originalBitmap, 0, 0, null); 
Paint defaultPaint = new Paint(); 
canvas.drawRect(0, height, width, height + reflectionGap, defaultPaint); 
canvas.drawBitmap(reflectionBitmap, 0, height + reflectionGap, null); 
Paint paint = new Paint(); 
LinearGradient shader = new LinearGradient(0, originalBitmap.getHeight(), 
0, withReflectionBitmap.getHeight(), 0x70ffffff, 0x00ffffff, 
TileMode.MIRROR); 
paint.setShader(shader); 
paint.setXfermode(new PorterDuffXfermode(Mode.DST_IN)); 
canvas.drawRect(0, height, width, withReflectionBitmap.getHeight(), paint); 
return withReflectionBitmap; 
} 
} 

以上就是本次介绍的全部知识点内容,感谢大家对澳门金沙网上娱乐的支持。

相关文章

最新评论