Add more debug info when a container view ID can't be found.
Change-Id: Ibb2afc49747bd2d0ac24605cb3ec390334f8abf8
diff --git a/core/java/android/app/FragmentManager.java b/core/java/android/app/FragmentManager.java
index c9e092c..c1e11bb 100644
--- a/core/java/android/app/FragmentManager.java
+++ b/core/java/android/app/FragmentManager.java
@@ -20,6 +20,7 @@
import android.animation.AnimatorInflater;
import android.animation.AnimatorListenerAdapter;
import android.content.res.Configuration;
+import android.content.res.Resources;
import android.content.res.TypedArray;
import android.os.Bundle;
import android.os.Handler;
@@ -427,6 +428,94 @@
}
};
+ private void logViewHierarchy(String prefix, View view) {
+ StringBuilder builder = new StringBuilder(128);
+ builder.append(prefix);
+ DebugUtils.buildShortClassTag(view, builder);
+ int id = view.getId();
+ if (id != -1) {
+ builder.append(" #");
+ builder.append(Integer.toHexString(id));
+ if (id != 0 && id != -1) {
+ try {
+ String pkgname;
+ switch (id&0xff000000) {
+ case 0x7f000000:
+ pkgname="app";
+ break;
+ case 0x01000000:
+ pkgname="android";
+ break;
+ default:
+ pkgname = view.getResources().getResourcePackageName(id);
+ break;
+ }
+ String typename = view.getResources().getResourceTypeName(id);
+ String entryname = view.getResources().getResourceEntryName(id);
+ builder.append(" (");
+ builder.append(pkgname);
+ builder.append(":");
+ builder.append(typename);
+ builder.append("/");
+ builder.append(entryname);
+ builder.append(")");
+ } catch (Resources.NotFoundException e) {
+ }
+ }
+ }
+ Object tag = view.getTag();
+ if (tag != null) {
+ builder.append(" ");
+ builder.append(tag);
+ }
+ builder.append("}");
+ Log.e(TAG, builder.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++) {
+ logViewHierarchy(prefix, grp.getChildAt(i));
+ }
+ }
+
+ private void throwNoViewFound(Fragment f) {
+ String msg = "No view found for id 0x"
+ + Integer.toHexString(f.mContainerId) + " ("
+ + f.getResources().getResourceName(f.mContainerId)
+ + ") for fragment " + f;
+ Log.e(TAG, msg);
+ Log.e(TAG, "Activity state:");
+ if (f.getActivity() != null) {
+ try {
+ LogWriter logw = new LogWriter(Log.ERROR, TAG);
+ PrintWriter pw = new PrintWriter(logw);
+ f.getActivity().dump(" ", null, pw, new String[] { });
+ } catch (Exception e) {
+ Log.e(TAG, "Failed dumping state", e);
+ }
+ } else {
+ Log.e(TAG, " NULL ACTIVITY!");
+ }
+ Log.e(TAG, "View hierarchy:");
+ if (f.getActivity() != null) {
+ try {
+ logViewHierarchy(" ", f.getActivity().getWindow().getDecorView());
+ } catch (Exception e) {
+ Log.e(TAG, "Failed dumping view hierarchy", e);
+ }
+ } else {
+ Log.e(TAG, " NULL ACTIVITY!");
+ }
+ throw new IllegalArgumentException(msg);
+ }
+
@Override
public FragmentTransaction beginTransaction() {
return new BackStackRecord(this);
@@ -824,9 +913,7 @@
if (f.mContainerId != 0) {
container = (ViewGroup)mActivity.findViewById(f.mContainerId);
if (container == null && !f.mRestored) {
- throw new IllegalArgumentException("No view found for id 0x"
- + Integer.toHexString(f.mContainerId)
- + " for fragment " + f);
+ throwNoViewFound(f);
}
}
f.mContainer = container;