IMMLeaks.java 文件源码

private Activity extractActivity(Context context) {
    while (true) {
        if (context instanceof Application) {
            return null;
        } else if (context instanceof Activity) {
            return (Activity) context;
        } else if (context instanceof ContextWrapper) {
            Context baseContext = ((ContextWrapper) context).getBaseContext();
            // Prevent Stack Overflow.
            if (baseContext == context) {
                return null;
            }
            context = baseContext;
        } else {
            return null;
        }
    }
}