Is there an Android tool to find the name of a layout for a running app?

Question

Background

I have been recently hired to maintain a very large program (only two Activities, about a hundred Fragments, and several hundred layouts).

Answer 1

Inspired by @nekocode ResourceInspector, I figure out how to show the layout resource name in the screenshot captured by AS's layout inspector.

Firstly create a class LayoutIndicatorInflater

public class LayoutIndicatorInflater extends LayoutInflater {

    private LayoutInflater mOriginalInflater;
    private String mAppPackageName;

    protected LayoutIndicatorInflater(LayoutInflater original, Context newContext) {
        super(original, newContext);
        mOriginalInflater = original;
        mAppPackageName = getContext().getPackageName();
    }

    @Override
    public LayoutInflater cloneInContext(Context newContext) {
        return new LayoutIndicatorInflater(mOriginalInflater.cloneInContext(newContext), newContext);
    }

    @Override
    public void setFactory(Factory factory) {
        super.setFactory(factory);
        mOriginalInflater.setFactory(factory);
    }

    @Override
    public void setFactory2(Factory2 factory) {
        super.setFactory2(factory);
        mOriginalInflater.setFactory2(factory);
    }

    @Override
    public View inflate(int resourceId, ViewGroup root, boolean attachToRoot) {
        Resources res = getContext().getResources();

        String packageName = "";
        try {
            packageName = res.getResourcePackageName(resourceId);
        } catch (Exception e) {}


        String resName = "";
        try {
            resName = res.getResourceEntryName(resourceId);
        } catch (Exception e) {}

        View view = mOriginalInflater.inflate(resourceId, root, attachToRoot);

        if (!mAppPackageName.equals(packageName)) {
            return view;
        }

        View targetView = view;
        if (root != null && attachToRoot) {
            targetView = root.getChildAt(root.getChildCount() - 1);
        }

        targetView.setContentDescription("layout res:" + resName);

        if (targetView instanceof ViewGroup) {
            ViewGroup viewGroup = (ViewGroup) targetView;
            for (int i = 0; i < viewGroup.getChildCount(); i++) {
                View child = viewGroup.getChildAt(i);
                if (TextUtils.isEmpty(child.getContentDescription())) {
                    child.setContentDescription("layout res:" + resName);
                }
            }
        }

        return view;
    }
}

Then create a helper class

    public class LayoutIndicatorHelper {

    public static void init(Application application) {
        if (BuildConfig.DEBUG) {
            application.registerActivityLifecycleCallbacks(new Application.ActivityLifecycleCallbacks() {
                @Override
                public void onActivityCreated(Activity activity, Bundle savedInstanceState) {
                    try {
                        Field inflaterField = ContextThemeWrapper.class.getDeclaredField("mInflater");
                        inflaterField.setAccessible(true);
                        LayoutInflater inflater = (LayoutInflater) inflaterField.get(activity);
                        LayoutInflater proxyInflater = null;
                        if (inflater != null) {
                            proxyInflater = new LayoutIndicatorInflater(inflater, activity);
                            inflaterField.set(activity, proxyInflater);
                        }

                        Class phoneWindowClass = Class.forName("com.android.internal.policy.PhoneWindow");
                        Field phoneWindowInflater = phoneWindowClass.getDeclaredField("mLayoutInflater");
                        phoneWindowInflater.setAccessible(true);
                        inflater = (LayoutInflater) phoneWindowInflater.get(activity.getWindow());
                        if (inflater != null && proxyInflater != null) {
                            phoneWindowInflater.set(activity.getWindow(), proxyInflater);
                        }
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                }

                @Override
                public void onActivityStarted(Activity activity) {

                }

                @Override
                public void onActivityResumed(Activity activity) {

                }

                @Override
                public void onActivityPaused(Activity activity) {

                }

                @Override
                public void onActivityStopped(Activity activity) {

                }

                @Override
                public void onActivitySaveInstanceState(Activity activity, Bundle outState) {

                }

                @Override
                public void onActivityDestroyed(Activity activity) {

                }
            });
        }
    }

}

Finally call LayoutIndicatorHelper.init in your Application's onCreate

    public class MyApplication extends Application {

    @Override
    public void onCreate() {
        super.onCreate();
        LayoutIndicatorHelper.init(this);
    }
}