能否在代码中动态声明Manifest标签并添加android:enabled属性？

Great question! Let’s break this down clearly: You can’t directly create or modify the android:enabled tag in the Manifest file at runtime—but there’s a practical workaround that achieves the same goal.

Why Direct Manifest Edits Aren’t Possible #

The Android Manifest is a static file that gets compiled into your app during the build process. Once the app is installed on a device, there’s no way to edit or add tags like android:enabled directly in this file. It’s locked in place after packaging.

The Workaround: Control Component State via PackageManager #

Instead of editing the Manifest, you can dynamically toggle whether your receiver (or any component) is enabled using Android’s PackageManager API. This has the exact same effect as setting android:enabled="true" or false in the Manifest, but you can adjust it on-the-fly in code.

Here’s a code example tailored to your SMS receiver:

// Reference your SMS receiver component
ComponentName smsReceiver = new ComponentName(context, YourSmsReceiver.class);
PackageManager pm = context.getPackageManager();

// Enable the receiver (matches android:enabled="true")
pm.setComponentEnabledSetting(
    smsReceiver,
    PackageManager.COMPONENT_ENABLED_STATE_ENABLED,
    PackageManager.DONT_KILL_APP // Keep the app running after the change
);

// Disable the receiver (matches android:enabled="false")
pm.setComponentEnabledSetting(
    smsReceiver,
    PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
    PackageManager.DONT_KILL_APP
);

Just replace YourSmsReceiver with the actual class name of your SMS receiver. This change takes effect immediately, and the system will respect this setting when delivering the SMS_RECEIVED intent.

内容的提问来源于stack exchange，提问作者SURYA N