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我正在努力为游戏创建一个健康栏，但它失败了：提前致谢！

    //there a corresponding ImageView in the layout
    healthLevel = (ImageView) findViewById(R.id.healthbar);
    BitmapDrawable bitmapDrawable = new BitmapDrawable(getResources(), "res/drawable/health.png");

    //vertical bar cropped from top
    clipDrawable = new ClipDrawable(bitmapDrawable, Gravity.BOTTOM, ClipDrawable.VERTICAL);  
    healthLevel.setImageDrawable(clipDrawable);

    HelperClass.setHealth();
    clipDrawable.setLevel(10000);
    clipDrawable.invalidateSelf();

日志：

11-12 19:32:46.272: W/BitmapDrawable(10524): BitmapDrawable cannot decode res/drawable/health.png

解决方案：

    //there a corresponding ImageView in the layout
    healthLevel = (ImageView) findViewById(R.id.healthbar);
    Bitmap bmp = BitmapFactory.decodeResource(getResources(), R.drawable.health);

    //Convert Bitmap to Drawable
    Drawable bitmapDrawable = new BitmapDrawable(getResources(),bmp); 

    //vertical bar cropped from top
    clipDrawable = new ClipDrawable(bitmapDrawable, Gravity.BOTTOM, ClipDrawable.VERTICAL);  
    healthLevel.setImageDrawable(clipDrawable);

    HelperClass.setHealth();
    clipDrawable.setLevel(10000);
    clipDrawable.invalidateSelf();
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1 回答 1

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至于您的问题，从文件路径创建一个BitmapDrawable需要文件的绝对存储路径而不是您的应用程序包的相对路径。

我已经尝试了以下代码，它可以工作。

    final ImageView iv = (ImageView) findViewById(R.id.image_view);
    File file = new File("/storage/sdcard0/Download/ic_launcher.png");
    BitmapDrawable bw = new BitmapDrawable(file.getAbsolutePath());
    iv.setImageDrawable(bw);

但是，我认为您需要的是类似于 a 的东西Bitmap，可以用

Bitmap bmp = BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher);

您可能会发现此教程和此链接很有帮助。

于 2013-11-13T02:29:17.493 回答