java - 我想使用 LayoutParams 让 ViewFlipper MATCH_PARENT 但失败

Question

我使用 ViewFlipper，我希望我的每个图像都能 match_parent。
但是当我添加这一行时我的程序关闭了。

 ViewFlipper.LayoutParams params = new ViewFlipper.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);

当我删除这一行时，应用程序运行，但图像无法匹配_parent....

这是我的代码:

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:context=".Comic"
tools:showIn="@layout/comic">
<ViewFlipper
    android:id="@+id/viewflipper"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
 <RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
    <ImageView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_gravity="center"
        android:adjustViewBounds="true"
        app:srcCompat="@drawable/st01_1"
        android:scaleType="centerCrop" />
</RelativeLayout>
 </ViewFlipper>
</FrameLayout>

这是 test.java:

viewflipper=(ViewFlipper)findViewById(R.id.viewflipper);

    viewflipper.addView(getImageView(R.drawable.st01_1),1);
    viewflipper.addView(getImageView(R.drawable.st01_2),2);

//


  private ImageView getImageView(int id){
    ImageView imageView = new ImageView(this);
    FrameLayout.LayoutParams params = new 
FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 
 ViewGroup.LayoutParams.MATCH_PARENT);
    imageView.setLayoutParams(params);
    imageView.setImageResource(id);
    viewflipper.addView(imageView);
    return imageView;
}

我该怎么办？ 请帮助我，谢谢

Answer 1

像这样添加你的imageView。!您需要向 imageView 提供参数。

ImageView imageView = new ImageView(this);
FrameLayout.LayoutParams params = new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT); 
imageView.setLayoutParams(params);
imageView.setImageResource(image);
viewFlipper.addView(imageView);

此外，删除 ViewFliper 的 LayoutParams

ViewFlipper.LayoutParams params = new ViewFlipper.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);