java - 获取知道包名称的应用程序名称

Question

我想知道应用程序的名称是否可以访问包名称。我能怎么做？我写了这段代码，但我不确定我做了什么。

    final PackageManager pm = getApplicationContext().getPackageManager();
    ApplicationInfo ai;
    try {
        ai = pm.getApplicationInfo(packageName, 0);
    } catch (final NameNotFoundException e) {
        ai = null;
    }
    final String applicationName = (String) (ai != null ? pm.getApplicationLabel(ai) : "(unknown)");

Answer 1

试试这个:

final PackageManager pm = getApplicationContext().getPackageManager();
ApplicationInfo ai;
try {
    ai = pm.getApplicationInfo( this.getPackageName(), 0);
} catch (final NameNotFoundException e) {
    ai = null;
}
final String applicationName = (String) (ai != null ? pm.getApplicationLabel(ai) : "(unknown)");

你做的也是对的。您可能只想将其放入 try catch 中以防止导致应用程序崩溃的异常