android获取已设置为textview的drawabletop的drawable

Question

我有textview

<TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="20dip"
            android:drawableTop="@drawable/new" />

我希望活动jave知道哪个图像已经设置drawableTop,如何？

Answer 1

使用

 Drawable[] drawables = textView.getCompoundDrawables();

另外如果你想比较两个drawable.

Bitmap bitmap = ((BitmapDrawable)drawables[1] ).getBitmap();
Bitmap bitmap2 = ((BitmapDrawable)getResources().getDrawable(R.drawable.twt_hover)).getBitmap();

if(bitmap == bitmap2)
    {
        //Code blcok
    }

Answer 2

首先,提供TextView一个ID,以便您可以在以下位置找到它Activity:

<TextView
    android:id="@+id/textView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginLeft="20dip"
    android:drawableTop="@drawable/new" />

其次,在您Activity找到TextView并onCreate在调用后获取方法中的复合drawable setContentView:

TextView textView = (TextView) findViewById(R.id.textView);
// Left, top, right, bottom drawables.
Drawable[] compoundDrawables = textView.getCompoundDrawables();
// This is the top drawable.
Drawable topCompoundDrawable = compoundDrawables[1];