我正在设置一个进度对话框(pbarDialog
)的可绘制对象,但我的问题是我想每次都调整可绘制对象的大小,但不知道如何调整。
下面是一些代码:
Handler progressHandler = new Handler() {
public void handleMessage(Message msg) {
switch (msg.what) {
// some more code
case UPDATE_PBAR:
pbarDialog.setIcon(mAppIcon);
pbarDialog.setMessage(mPbarMsg);
pbarDialog.incrementProgressBy(mIncrement+1);
break;
}
}
};
pbarDialog.show();
Thread myThread = new Thread(new Runnable() {
public void run() {
// some code
for (int i = 0; i < mApps.size(); i++) {
mAppIcon = mAdapter.getIcons().get(mApps.get(i).getPackageName());
// need to resize drawable here
progressHandler.sendEmptyMessage(UPDATE_PBAR);
}
handler.sendEmptyMessage(DISMISS_PBAR);
}
});
myThread.start();
发布于 2011-12-20 16:53:02
下面的方法对我很有效:
private Drawable resize(Drawable image) {
Bitmap b = ((BitmapDrawable)image).getBitmap();
Bitmap bitmapResized = Bitmap.createScaledBitmap(b, 50, 50, false);
return new BitmapDrawable(getResources(), bitmapResized);
}
发布于 2013-11-23 00:20:59
这就是我最终的结果,部分归功于Saad的回答:
public Drawable scaleImage (Drawable image, float scaleFactor) {
if ((image == null) || !(image instanceof BitmapDrawable)) {
return image;
}
Bitmap b = ((BitmapDrawable)image).getBitmap();
int sizeX = Math.round(image.getIntrinsicWidth() * scaleFactor);
int sizeY = Math.round(image.getIntrinsicHeight() * scaleFactor);
Bitmap bitmapResized = Bitmap.createScaledBitmap(b, sizeX, sizeY, false);
image = new BitmapDrawable(getResources(), bitmapResized);
return image;
}
发布于 2014-05-10 01:36:07
对于调整大小,这是很好和简短的(上面的代码不适合我),发现here
ImageView iv = (ImageView) findViewById(R.id.imageView);
Bitmap bMap = BitmapFactory.decodeResource(getResources(), R.drawable.picture);
Bitmap bMapScaled = Bitmap.createScaledBitmap(bMap, newWidth, newHeight, true);
iv.setImageBitmap(bMapScaled);
https://stackoverflow.com/questions/7021578
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