一些生成的图标看起来比正常图标大答案

【问题标题】：Some generated Icons appear larger than the normal icon一些生成的图标看起来比正常图标大
【发布时间】：2016-06-01 02:02:59
【问题描述】：

我目前正在制作我设备上安装的所有应用程序的列表，但由于某种原因，某些图标看起来比通常的图标大。如何定义图标的最大尺寸？

这是我用来获取图标的代码

ImageView appIcon = holder.Icon;
            Drawable icon = null;
            try {

                icon = getPackageManager().getApplicationIcon(apps.get(position).name.toString());
            } catch (PackageManager.NameNotFoundException e) {
              Toast.makeText(getApplicationContext(), e.toString(), Toast.LENGTH_SHORT).show();
            }

            appIcon.setImageDrawable(icon);

【问题讨论】：

标签： java android icons package-managers

【解决方案1】：

    PackageManager pm = context.getApplicationContext().getPackageManager();
    PackageInfo pi = pm.getPackageInfo(packageName, 0);
    String title=pi.applicationInfo.loadLabel(pm).toString();
    Drawable icon== pi.applicationInfo.loadIcon(pm))

否则，我假设您使用的是列表视图。设置 imageview 的宽度和高度。

  <ImageView
            android:id="@+id/stats_icon"
            android:layout_width="40dp"
            android:layout_height="40dp"
            android:layout_gravity="center_vertical"
            android:layout_marginRight="4dip"
            android:layout_marginTop="2dip"
            android:scaleType="fitCenter" />

或

private static Bitmap drawableToBitmap (Drawable drawable) {
        Bitmap bitmap = null;

        if (drawable instanceof BitmapDrawable) {
            BitmapDrawable bitmapDrawable = (BitmapDrawable) drawable;
            if(bitmapDrawable.getBitmap() != null) {
                return bitmapDrawable.getBitmap();
            }
        }

        if(drawable.getIntrinsicWidth() <= 0 || drawable.getIntrinsicHeight() <= 0) {
            bitmap = Bitmap.createBitmap(1, 1, Bitmap.Config.ARGB_8888); // Single color bitmap will be created of 1x1 pixel
        } else {
            bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
        }

        Canvas canvas = new Canvas(bitmap);
        drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
        drawable.draw(canvas);
        return bitmap;
    }

【讨论】：