More view hierarchy, fragment debugging.

Add a View.toString() method.

Rename all of the View private flags to have a PFLAG prefix to
avoid going insane trying to figure out which constant goes with
which flag.

Activity.dump() now includes a summary of the activity's view
hierarchy, using the View.toString() method.

All exceptions thrown by FragmentManager now perform a dump of
the owning activity state, where appropriate.

Change-Id: I6482e397e10cb5a0612ab02ce6ed5131823437a6

1 files changed, 23 insertions, 0 deletions

diff --git a/core/java/android/app/Activity.java b/core/java/android/app/Activity.java
index 809acac..77107ee 100644
--- a/core/java/android/app/Activity.java
+++ b/core/java/android/app/Activity.java
@@ -4733,6 +4733,29 @@ public class Activity extends ContextThemeWrapper
             mLoaderManager.dump(prefix + "  ", fd, writer, args);
         }
         mFragments.dump(prefix, fd, writer, args);
+        writer.print(prefix); writer.println("View Hierarchy:");
+        dumpViewHierarchy(prefix + "  ", writer, getWindow().getDecorView());
+    }
+
+    private void dumpViewHierarchy(String prefix, PrintWriter writer, View view) {
+        writer.print(prefix);
+        if (view == null) {
+            writer.println("null");
+            return;
+        }
+        writer.println(view.toString());
+        if (!(view instanceof ViewGroup)) {
+            return;
+        }
+        ViewGroup grp = (ViewGroup)view;
+        final int N = grp.getChildCount();
+        if (N <= 0) {
+            return;
+        }
+        prefix = prefix + "  ";
+        for (int i=0; i<N; i++) {
+            dumpViewHierarchy(prefix, writer, grp.getChildAt(i));
+        }
     }
 
     /**