在Android按钮内获取调整大小的图像

<bitmap xmlns:android="http://schemas.android.com/apk/res/android"
    android:src="@drawable/your_image"
    android:tileMode="disabled"
    android:scaleType="fitXY"
    android:width="100dp"
    android:height="100dp" />

    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:background="@drawable/button_image" />

    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:src="@drawable/your_image"
    android:scaleType="fitXY"
    android:background="@null" />

public class CustomButton extends Button {
    public CustomButton(Context context) {
        super(context);
    }

    public CustomButton(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    protected void onDraw(Canvas canvas) {
        Drawable drawable = getResources().getDrawable(R.drawable.your_image);
        drawable.setBounds(0, 0, getWidth(), getHeight());
        drawable.draw(canvas);
        super.onDraw(canvas);
    }
}

<com.example.CustomButton
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Click me" />