安卓 : how to create componentName in code using

Question

我有一个功能，我只想在满足某些条件时才可用，因此我有此 Activity 别名:

<activity-alias android:name="share-files-text"
                    android:targetActivity=".MyActivity"
                    android:exported="true"
                    android:enabled="false">
        <intent-filter android:label="@string/open_with">
            <action android:name="android.intent.action.VIEW" />
            <category android:name="android.intent.category.DEFAULT" />
            <category android:name="android.intent.category.BROWSABLE" />
            <data android:mimeType="application/pdf" />
            <data android:mimeType="image/*" />
            <data android:mimeType="text/plain" />
        </intent-filter>
    </activity-alias>

一旦进入 Activity ，我就可以使用此代码来启用该组件

        String packageName = getPackageName();
        ComponentName componentWithTextFiles = new ComponentName(packageName, "share-files-text");
        ComponentName componentWithoutTextFiles = new ComponentName(packageName, "share-files");
        if(DebugAndTestSettings.ENABLE_TEXT_SLIDE){
            getPackageManager().setComponentEnabledSetting(componentWithTextFiles, PackageManager.COMPONENT_ENABLED_STATE_ENABLED, 0);
            getPackageManager().setComponentEnabledSetting(componentWithoutTextFiles, PackageManager.COMPONENT_ENABLED_STATE_DISABLED, 0);
        } else {
            getPackageManager().setComponentEnabledSetting(componentWithTextFiles, PackageManager.COMPONENT_ENABLED_STATE_DISABLED, 0);
            getPackageManager().setComponentEnabledSetting(componentWithoutTextFiles, PackageManager.COMPONENT_ENABLED_STATE_ENABLED, 0);
        }

问题是它崩溃了，说包 blabla 不包含名为 share-files-text 的 Activity ，如何使用别名禁用/启用此元素？谢谢

编辑:我从这篇文章中得到了这个想法: Android: Can I enable/disable an activity's intent filter programmatically?

Answer 1

我已经使用此代码找到了解决方案

String packageName = getPackageName();
try {
    PackageInfo p = getApplicationContext().getPackageManager().getPackageInfo(packageName, PackageManager.GET_ACTIVITIES);
    for (ActivityInfo activityInfo : p.activities) {
        if(log.d()) log.d("ACT " + activityInfo.name+" "+activityInfo.packageName);
    }
} catch (PackageManager.NameNotFoundException e) {
    e.printStackTrace();
}

如果您的别名是“alias”

ComponentName componentWithoutTextFiles = new ComponentName(packageName, packageName".alias");