21

我是 Android 开发新手，面临管理 Android 资源的问题。我想用 ImageView 和 TextView 创建一个 listView。

以下是我的实现，效果很好，但实际上我想使用我之前创建的数组，如下所示：

int[] img = getResources().getIntArray(R.Array.img);

package com.simplelistviewwithlistactivity;

import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.app.ListActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.ListView;

public class ListActivityS extends ListActivity {
    int[] img = { R.drawable.r1, R.drawable.r2, R.drawable.skycubemap1,
            R.drawable.skycubemap1, R.drawable.skycubemap2,
            R.drawable.skycubemap3, R.drawable.skycubemap4,
            R.drawable.skycubemap5 };

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        getListView().setDividerHeight(2);
        getListView().setAdapter(new BindDataAdapter(this, img, item));
    }

    @Override
    protected void onListItemClick(ListView l, View v, int position, long id) {
        super.onListItemClick(l, v, position, id);
        Builder builder = new AlertDialog.Builder(this);
        builder.setMessage(item[position] + " is clicked.");
        builder.setPositiveButton("OK", null);
        builder.show();
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_list, menu);
        return true;
    }

    private String item[] = { "This is list Item1", "This is list Item2",
            "This is list Item3", "This is list Item4", "This is list Item5",
            "This is list Item6", "This is list Item8", "This is list Item8"
4

2 回答 2

47

创建一个如下所示的 XML 并将其放入 res/values/arrays.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <array name="icons">
        <item>@drawable/home</item>
        <item>@drawable/settings</item>
        <item>@drawable/logout</item>
    </array>
    <array name="colors">
        <item>#FFFF0000</item>
        <item>#FF00FF00</item>
        <item>#FF0000FF</item>
    </array>
</resources>

然后使用这样的代码：

Resources res = getResources();
TypedArray icons = res.obtainTypedArray(R.array.icons);
Drawable drawable = icons.getDrawable(0);

TypedArray colors = res.obtainTypedArray(R.array.colors);
int color = colors.getColor(0,0);

来源：http: //developer.android.com/guide/topics/resources/more-resources.html

于 2013-05-17T19:32:10.253 回答
17

您可以使用来自res/values/arrays.xml.

对于可绘制对象

<integer-array name="your_images">
    <item>@drawable/ic_active_image</item>
    <item>@drawable/ic_visited_image</item>
</integer-array>

val position = 1 // Position in array.
val drawables = resources.obtainTypedArray(R.array.your_images)
val drawable = drawables.getResourceId(position, -1)
image.setImageResource(drawable)
drawables.recycle()

颜色_

<array name="your_colors">
    <item>#365374</item>
    <item>#00B9FF</item>
</array>

val position = 1
val colors = resources.obtainTypedArray(R.array.your_colors)
val color = colors.getColor(position, -1)
title.setTextColor(color)
colors.recycle()

对于字符串

<string-array name="your_strings">
    <item>Active</item>
    <item>Visited</item>
</string-array>

val position = 1
val strings = resources.getStringArray(R.array.your_strings)
title.text = strings[position]

复数：

<plurals name="proposal_plurals">
    <item quantity="zero">No proposals</item>
    <item quantity="one">%1$d proposal</item>
    <item quantity="two">%1$d proposals</item>
    <item quantity="few">%1$d proposals</item>
    <item quantity="many">%1$d proposals</item>
    <item quantity="other">%1$d proposals</item>
</plurals>

val count = 117
val proposals = count.takeIf { it != 0 }?.let {
    resources.getQuantityString(R.plurals.proposal_plurals, it, it)
} ?: "No proposals"
于 2019-01-10T14:32:13.383 回答