java - 可绘制 ID 可乐零

Question

<integer-array name="ar_ex_1">
    <item>@drawable/ar_001_main</item>
    <item>@drawable/ar_001_1</item>
    <item>@drawable/ar_001_2</item>
    <item>@drawable/ar_001_3</item>
    <item>@drawable/ar_001_4</item>
    <item>@drawable/ar_001_5</item>
</integer-array>

我有这个整数数组，我使用以下方法将其加载到 Java 中:

int[] arr = getResources().getIntArray(R.array.ar_ex_1);
for(int i: arr) {
   Log.e("anindya", ""+i);
}

输出为:

06-04 20:31:57.045 9360-9360/edu.usc.projecttalent.cognitive E/anindya: 0
06-04 20:31:57.045 9360-9360/edu.usc.projecttalent.cognitive E/anindya: 0
06-04 20:31:57.045 9360-9360/edu.usc.projecttalent.cognitive E/anindya: 0
06-04 20:31:57.045 9360-9360/edu.usc.projecttalent.cognitive E/anindya: 0
06-04 20:31:57.045 9360-9360/edu.usc.projecttalent.cognitive E/anindya: 0
06-04 20:31:57.045 9360-9360/edu.usc.projecttalent.cognitive E/anindya: 0

我本来期待整数(R.java 中的 drawable 的值，但我只得到零。这不是加载数组的方法吗？可绘制的？

Answer 1

如果这是 array.xml 中的可绘制数组，请尝试这种代码。

 <integer-array name="ar_ex_1">
        <item>@drawable/ar_001_main</item>
        <item>@drawable/ar_001_1</item>
        <item>@drawable/ar_001_2</item>
        <item>@drawable/ar_001_3</item>
        <item>@drawable/ar_001_4</item>
        <item>@drawable/ar_001_5</item>
    </integer-array>

然后在您的 Activity 中，像这样访问它们:

TypedArray imgs = getResources().obtainTypedArray(R.array.ar_ex_1);

// get resource ID by index
imgs.getResourceId(i, -1)

// or set you ImageView's resource to the id
mImgView1.setImageResource(imgs.getResourceId(i, -1));

// recycle the array
imgs.recycle();