android - 如何为 ImageView 设置 LayoutParams

Question

我的应用程序中有一个 ImageView。我的问题是如何为其设置参数？

ImageView header = new ImageView(getActivity());

我用过这种方式，但我遇到了 classCastException

ImageView header = new ImageView(getActivity());
header.setImageResource(R.drawable.ahsan_hadis_img);
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(200, 1500);
header.setLayoutParams(layoutParams);

Answer 1

尝试将此添加到您的 XML 文件中:

<LinearLayout android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/linearLayout"
    android:orientation="vertical">

</LinearLayout>

将此添加到您的 JAVA 文件中

LinearLayout.LayoutParams params =
                    new LinearLayout.LayoutParams(
                            android.widget.LinearLayout.LayoutParams.WRAP_CONTENT,
                            android.widget.LinearLayout.LayoutParams.WRAP_CONTENT);

ImageView subImage = new ImageView(this);
subImage.setLayoutParams(params);              
layout.addView(subImage);