android - 意图ActivityNotFoundException 失败

Question

我为一个活动写了一个活动别名：

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.company.htmlapp">

    <application
        android:name=".AppController">

        <activity
            android:name=".main.MainActivity" />

       <activity-alias
           android:name=".main.MainActivityAlias"
           android:targetActivity=".main.MainActivity">
    </application>

</manifest>

按照这个答案，我正在尝试启动该活动别名：

void goToMainActivity(String server) {
    Intent i;
    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
        i = new Intent();
        String activityPackage = MainActivity.class.getPackage().getName();
        ComponentName componentName = new ComponentName(activityPackage, ".MainActivityAlias");
        i.setComponent(componentName);
    } else {
        i = new Intent(this, MainActivity.class);
    }

    i.putExtra( ... );
    startActivity(i);
}

由此产生的名称MainActivity.class.getPackage().getName()是com. company.htmlapp.main。

但它在 startActivity(i) 行中失败并带有 ActivityNotFoundException：

android.content.ActivityNotFoundException: Unable to find explicit activity class 
   {com.company.htmlapp.main/.MainActivityAlias}; have you declared this 
   activity in your AndroidManifest.xml?

编辑：

尝试使用 ComponentName(activityPackage, ".main.MainActivityAlias"); 不同的包产生的错误是相同的：

android.content.ActivityNotFoundException: Unable to find 
    explicit activity class {com.company.htmlapp.main/.main.MainActivityAlias}; 
    have you declared this activity in your AndroidManifest.xml?

Answer 1

对于这样的<activity-alias>声明：

<activity-alias
  android:name=".main.MainActivityAlias"
  android:targetActivity=".main.MainActivity">

ComponentName可以这样创建：

ComponentName componentName = new ComponentName("com.company.htmlapp", "com.company.htmlapp.main.MainActivityAlias");

在我的情况下，我也可以动态地做到这一点：

    try {
        PackageManager pm = getPackageManager();
        PackageInfo packageInfo = pm.getPackageInfo(this.getPackageName(), 0);

        ComponentName componentName = new ComponentName(packageInfo.packageName,
                MainActivity.class.getPackage().getName() + ".MainActivityAlias");
        i.setComponent(componentName);
    } catch (PackageManager.NameNotFoundException e) {
        e.printStackTrace();
    }