Android-how to put two or more applications in one process?

1. Add Android: shareduserid in <manifest>. Note that the value of this attribute must contain dot, which is a form such as Java packae. For example, Com. AAA. BBB. If there is no dot, an error will occur in ADB install xxx.apk in the future: failure [install_parse_failed_bad_shared_user_id]. This is not mentioned in the android document. Thanks to Google, the omnipotent Google gave me the answer. All applications must be the same.
2. Add Android: shareduserlabel = "@ string/shared_user_label" to <manifest>. The label must be a string resource and cannot be a raw string. All applications must be the same.
3. Add: Android: Process = "XXX. xxx. XXX ", here all applications must be filled in the same, the content is the name of the process, in general, the process name in Android is the value of the package in manifest.
4. All applications use the same key for sign. If you use eclipse ADT plugin for development, because all applications use the same debug key for sign, there is no additional work in this step. For more details about the sign APK, see the android documentation: http://androidappdocs.appspot.com/guide/publishing/app-signing.html