此应用专为旧版Android打造,因此可能无法正常运行。请尝试检查更新或与开发者联系

最近调试一款新的机型时,出现"此应用专为旧版Android打造,因此可能无法正常运行。请尝试检查更新或与开发者联系"提示,出现这种错误的原因:

应用启动,startActivity时,流程会执行到realStartActivityLocked方法,代码位于ActivityStackSupervisor.java

realStartActivityLocked方法中,会调用AppWarnings.java的onStartActivity方法,如下:

final boolean realStartActivityLocked(ActivityRecord r, ProcessRecord app, boolean andResume, boolean checkConfig) throws RemoteException {
    try {
        // ...
        mService.getAppWarningsLocked().onStartActivity(r);
        // ...
    } catch (RemoteException e) {
        // ...
    }
}

onStartActivity方法实现:

/**
   * Called when an activity is being started.
   *
   * @param r record for the activity being started
   */
public void onStartActivity(ActivityRecord r) {
    showUnsupportedCompileSdkDialogIfNeeded(r);
    showUnsupportedDisplaySizeDialogIfNeeded(r);
    showDeprecatedTarge

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