<color name="colorPrimary">#3F51B5</color>
<color name="colorAccent">#FF4081</color>

<string name="app_name">MyApplication</string>
<string name="welcome_message">Hello, %s!</string>

// 獲取普通字符串
String appName = getResources().getString(R.string.app_name);

// 獲取帶參數(shù)的字符串
String welcomeMsg = getResources().getString(R.string.welcome_message, "John");

<dimen name="padding_medium">16dp</dimen>

<integer name="max_count">10</integer>
<bool name="is_debug">true</bool>

<string-array name="planets_array">
    <item>Mercury</item>
    <item>Venus</item>
    <item>Earth</item>
</string-array>

<integer-array name="numbers_array">
    <item>1</item>
    <item>2</item>
    <item>3</item>
</integer-array>

// 獲取包信息
PackageManager pm = context.getPackageManager();
String packageName = context.getPackageName();

try {
    PackageInfo packageInfo = pm.getPackageInfo(packageName, 0);
    
    // 應(yīng)用版本信息
    String versionName = packageInfo.versionName;
    int versionCode = packageInfo.versionCode; // 注意: 新API中使用long類型的versionCode
    
    // 應(yīng)用名稱
    String appName = pm.getApplicationLabel(packageInfo.applicationInfo).toString();
    
    // 應(yīng)用圖標
    Drawable appIcon = pm.getApplicationIcon(packageName);
    
} catch (PackageManager.NameNotFoundException e) {
    e.printStackTrace();
}

val pm = context.packageManager
val packageName = context.packageName

try {
    val packageInfo = pm.getPackageInfo(packageName, 0)
    
    val versionName = packageInfo.versionName
    val versionCode = packageInfo.longVersionCode // 注意使用longVersionCode
    
    val appName = pm.getApplicationLabel(packageInfo.applicationInfo).toString()
    val appIcon = pm.getApplicationIcon(packageName)
    
} catch (e: PackageManager.NameNotFoundException) {
    e.printStackTrace()
}

// 檢查應(yīng)用是否安裝
boolean isAppInstalled = isPackageInstalled("com.example.app", context);

public static boolean isPackageInstalled(String packageName, Context context) {
    try {
        context.getPackageManager().getPackageInfo(packageName, 0);
        return true;
    } catch (PackageManager.NameNotFoundException e) {
        return false;
    }
}

// 獲取已安裝應(yīng)用列表
List<ApplicationInfo> apps = context.getPackageManager().getInstalledApplications(0);
for (ApplicationInfo appInfo : apps) {
    String appName = appInfo.loadLabel(context.getPackageManager()).toString();
    String packageName = appInfo.packageName;
    Drawable icon = appInfo.loadIcon(context.getPackageManager());
    // 處理應(yīng)用信息...
}

// 獲取Gson庫版本
String gsonVersion = com.google.gson.BuildConfig.VERSION_NAME;

// 獲取Glide庫版本
String glideVersion = com.bumptech.glide.BuildConfig.VERSION_NAME;

// 獲取所有已安裝包信息
List<PackageInfo> packages = getPackageManager().getInstalledPackages(0);

for (PackageInfo packageInfo : packages) {
    if (packageInfo.packageName.startsWith("com.google.") || 
        packageInfo.packageName.startsWith("com.facebook.")) {
        // 這是Google或Facebook的庫
        String packageName = packageInfo.packageName;
        String versionName = packageInfo.versionName;
        int versionCode = packageInfo.versionCode;
    }
}

try {
    Class<?> clazz = Class.forName("com.some.library.internal.Version");
    Field versionField = clazz.getField("VERSION");
    String version = (String) versionField.get(null);
} catch (Exception e) {
    e.printStackTrace();
}

// 獲取資源ID
public static int getResourceId(Context context, String resourceName, String type) {
    return context.getResources().getIdentifier(resourceName, type, context.getPackageName());
}

// 使用示例
int colorId = getResourceId(context, "colorPrimary", "color");
int stringId = getResourceId(context, "app_name", "string");
int drawableId = getResourceId(context, "ic_launcher", "drawable");

// 創(chuàng)建一個TypedArray
TypedArray typedArray = context.getTheme().obtainStyledAttributes(new int[]{R.attr.colorPrimary});

try {
    // 獲取顏色值
    int colorPrimary = typedArray.getColor(0, Color.BLACK);
} finally {
    typedArray.recycle();
}

// 創(chuàng)建特定Locale的Configuration
Configuration config = new Configuration(resources.getConfiguration());
config.setLocale(new Locale("es")); // 西班牙語

// 創(chuàng)建新的Context
Context localizedContext = context.createConfigurationContext(config);

// 使用新Context獲取資源
String localizedString = localizedContext.getResources().getString(R.string.welcome_message);