如何调用getDrawable方法 [英] How to call getDrawable method

问题描述

我创建的图像共享应用程序，它使用一键分享图片。我发现了一个未能解​​决所需的方法误差在下面的code：

I am creating an image sharing app which uses a button to share images. I'm getting an unable to resolve the required method error in the code below:

public class ShareActivity extends Activity implements View.OnClickListener {

    Button button1;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_share);

        button1 = (Button)findViewById(R.id.button1);
        button1.setOnClickListener(this);
    }
    private void button1Click()
    {
        BitmapDrawable bm = (BitmapDrawable) getDrawable(button1);
        Bitmap mysharebmp = bm.getBitmap();
        String path = Images.Media.insertImage(getContentResolver(),
                            mysharebmp, "MyImage", null);

在这一行：

BitmapDrawable bm = (BitmapDrawable) getDrawable(button1);ShareActivity

我收到的方法getDrawable（巴顿）是未定义的类型ShareActivity 。为什么会我会得到这个错误？满code是<一个href="http://stackoverflow.com/questions/21955943/share-the-selected-image-only-in-android">here.

I am getting The method getDrawable(Button) is undefined for the type ShareActivity. Why might I be getting this error? The full code is here.

推荐答案

这是非常不清楚，你想在这里做什么，我怀疑你会遇到其他一些问题，这code。但你得到getDrawable是未定义ShareActivity错误的原因是因为活动类没有一个 getDrawable 方法。

It's extremely unclear as to what you want to do here, and I suspect you're going to encounter a number of other problems with this code. But the reason that you're getting the error "getDrawable is undefined for ShareActivity" is because the Activity class does not have a getDrawable method.

而不是调用 getDrawable 中，你需要获得应用程序的资源，然后检索的绘制。你要找的是什么：

Instead of calling getDrawable, you need to get the app resources and then retrieve the drawable. What you're looking for is:

BitmapDrawable bm = (BitmapDrawable) getResources().getDrawable(R.drawable.my_bitmap);

如果你有一些图像被称为my_bitmap.png在 / RES /绘制/ 。

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