在 Android 中调整 Drawable 的大小 [英] Resize Drawable in Android

问题描述

我正在为进度对话框 (pbarDialog) 设置一个可绘制对象，但我的问题是我每次都想调整可绘制对象的大小，但不知道如何进行.

I am setting a drawable for a progress dialog (pbarDialog) but my issue is I want to resize the drawable each time but can't figure out how.

这是一些代码:

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();

推荐答案

以下对我有用:

private Drawable resize(Drawable image) {
    Bitmap b = ((BitmapDrawable)image).getBitmap();
    Bitmap bitmapResized = Bitmap.createScaledBitmap(b, 50, 50, false);
    return new BitmapDrawable(getResources(), bitmapResized);
}

这篇关于在 Android 中调整 Drawable 的大小的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！