Question

我有ImageView数组，但是当我在java中设置图像时它不起作用，它使用的是在xml布局中定义的默认图像

private ImageView[]  imageView=new ImageView[2];

 protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.change_selection_activity);

    for(int i=0;i<2;i++)
        imageView[i]=new ImageView(this);

    imageView[0]= (ImageView) findViewById(R.id.selection_one);
    imageView[1]= (ImageView) findViewById(R.id.selection_two);
    imageView[0].setImageResource(R.drawable.ic_network_wifi_black_48dp);
    imageView[1].setImageResource(R.drawable.ic_network_wifi_black_48dp);
}

xml文件：

<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:background="#96000000"
>
<TableLayout
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:layout_gravity="center_vertical"
    >

    <TableRow
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginBottom="16dp"
        android:gravity="center"
        >

        <ImageView
            android:layout_width="@dimen/bubble_dimension"
            android:layout_height="@dimen/bubble_dimension"
            android:src="@drawable/ic_info_black_48dp"
            android:padding="8dp"
            android:layout_marginRight="16dp"
            android:id="@+id/selection_one" />

        <ImageView
            android:layout_width="@dimen/bubble_dimension"
            android:layout_height="@dimen/bubble_dimension"
            android:padding="8dp"
            android:layout_marginRight="16dp"
            android:id="@+id/selection_two"
            android:src="@drawable/ic_info_black_48dp"/>

        <ImageView
            android:layout_width="@dimen/bubble_dimension"
            android:layout_height="@dimen/bubble_dimension"
            android:padding="8dp"
            android:scaleType="centerCrop"
            android:id="@+id/selection_three"
            android:src="@drawable/ic_info_black_48dp"/>

    </TableRow>

    <TableRow
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginBottom="16dp"
        android:gravity="center">

        <ImageView
            android:layout_width="@dimen/bubble_dimension"
            android:layout_height="@dimen/bubble_dimension"
            android:padding="8dp"
            android:layout_marginRight="16dp"
            android:id="@+id/selection_four"
            android:src="@drawable/ic_info_black_48dp"/>

        <ImageView
            android:layout_width="@dimen/bubble_dimension"
            android:layout_height="@dimen/bubble_dimension"
            android:padding="8dp"
            android:layout_marginRight="16dp"
            android:id="@+id/selection_five"
            android:src="@drawable/ic_info_black_48dp"/>

        <ImageView
            android:layout_width="@dimen/bubble_dimension"
            android:layout_height="@dimen/bubble_dimension"
            android:padding="8dp"
            android:id="@+id/selection_six"
            android:src="@drawable/ic_info_black_48dp"/>

    </TableRow>

    <TableRow
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="center">


        <ImageView
            android:layout_width="@dimen/bubble_dimension"
            android:layout_height="@dimen/bubble_dimension"
            android:padding="8dp"
            android:layout_marginRight="16dp"
            android:id="@+id/selection_seven"
            android:src="@drawable/ic_info_black_48dp"
            />

        <ImageView
            android:layout_width="@dimen/bubble_dimension"
            android:layout_height="@dimen/bubble_dimension"
            android:padding="8dp"
            android:layout_marginRight="16dp"
            android:id="@+id/selection_eight"
            android:src="@drawable/ic_info_black_48dp"/>

        <ImageView
            android:layout_width="@dimen/bubble_dimension"
            android:layout_height="@dimen/bubble_dimension"
            android:padding="8dp"
            android:id="@+id/selection_nine"
            android:src="@drawable/ic_info_black_48dp"/>

    </TableRow>


</TableLayout>

请帮忙，当我使用没有数组的ImageView时，它正常工作

PS：onClicklistener在这些imageView [i]

上完美运行

Answer 1

试试这个：

Resources resources = getResources();
imageView[0].setImageDrawable(resources.getDrawable(R.drawable.ic_network_wifi_black_48dp));
imageView[1].setImageDrawable(resources.getDrawable(R.drawable.ic_network_wifi_black_48dp));

ImageView数组不起作用

1 个答案: