React Native/Flutter能否实现来电操控（隐藏来电界面）？

Hey there! Let's dive into your questions about controlling incoming call interfaces in React Native and Flutter.

First off, the short answer is: you can't directly hide the system incoming call UI using out-of-the-box React Native APIs. Here's why:

• The incoming call interface is a system-level component, managed by Android's Telecom Framework or iOS's CallKit. These are tightly controlled by the OS, and React Native's core library doesn't expose APIs to interfere with them.
• You might have luck by building custom native modules (for both Android and iOS), but there are major hurdles:
  • On Android: You'd need special permissions like READ_PHONE_STATE, ANSWER_PHONE_CALLS, and potentially even system-level privileges (like Device Admin or Accessibility Service) to modify or hide the call UI. Even then, newer Android versions (10+) restrict these capabilities heavily to protect user privacy, and your app might get rejected from the Play Store if it tries to misuse these permissions.
  • On iOS: Apple's CallKit framework strictly prevents third-party apps from altering or hiding the system call interface. This is a hard restriction to ensure user trust and system stability—any attempt to bypass this will almost certainly get your app rejected from the App Store.
• It's no surprise you couldn't find existing RN modules for this; the functionality is highly platform-dependent, permission-heavy, and risky for app store approval.

Flutter faces similar limitations to React Native here:

• Out-of-the-box Flutter APIs don't support hiding the system incoming call UI either.
• To attempt this, you'd need to build platform-specific plugins using Flutter's Platform Channels. But the same restrictions apply:
  • Android requires the same high-level permissions and system privileges as mentioned above, with the same app store risks.
  • iOS's CallKit policies block any interference with the native call interface, so even a custom plugin won't let you hide it for public apps.
• Just like React Native, there are almost no ready-made Flutter packages for this feature due to the platform constraints and approval risks.

Key Notes #

For consumer-facing apps, both platforms strongly discourage (and in many cases block) modifying system call interfaces. This is to protect users from malicious apps that might intercept calls or hide important system notifications. If you're building an enterprise app for a controlled environment (like custom Android ROMs), you might have more flexibility, but for public apps, this functionality is generally not feasible.

内容的提问来源于stack exchange，提问作者iLiA