932
android GridView實現選中圖片放大
https://www.55zm.com/a/20130119/40937.html
getView裏麵
if (max_position != position) {
holder.image.setImageBitmap(bitmap);
holder.image.setScaleType(ScaleType.CENTER);
} else {
holder.image.setScaleType(ScaleType.MATRIX );
//獲得Bitmap的高和寬
int bmpWidth=bitmap.getWidth();
int bmpHeight=bitmap.getHeight();
//產生resize後的Bitmap對象
Matrix matrix=new Matrix();
matrix.setScale(1.05f, 1.05f);
Bitmap resizeBmp=Bitmap.createBitmap(bitmap, 0, 0, bmpWidth, bmpHeight, matrix, true);
holder.image.setImageBitmap(resizeBmp);
}
private int max_position;
public void notifyDataSetChanged(int position) {
max_position = position;
notifyDataSetChanged();
}
也可以直接
if (max_position != position) {
holder.image.setImageBitmap(bitmap);
holder.image.setScaleType(ScaleType.CENTER_INSIDE);
} else {
holder.image.setImageBitmap(bitmap);
holder.image.setScaleType(ScaleType.CENTER_CROP);
}
最後更新：2017-04-03 16:48:31