Maybe fix issue #3093599: java.lang.IndexOutOfBoundsException...

...Invalid index 0, size is 0 at
android.app.ActivityThread.performPauseActivity(ActivityThread.java:2326)

It looks like if an arrow key is dispatched between the time the
list view is told its data set has changed and it does the resulting
layout pass, we could try to move the position to a now invalid
index.  This may prevent that from happening.

Also put in a better error message if saving state of a fragment
whose target is no longer in the fragment manager.

And fix a bug in PackageManager where we could return a null from
queryIntentActivities().

And add a new API to find out whether a fragment is being removed,
to help fix issue #3306021: NPE at
android.app.AlertDialog.getDefaultDialogTheme(AlertDialog.java)

Next, for new HC apps we can delay committing data to
storage until the activity is stopped.

Finally, use the new multi-threaded AyncTask executor in a few
places, so we don't have worked blocked by long-running tasks from
the application.

Change-Id: I27b2aafedf2e1bf3a2316309889613fa539760f3

1 files changed, 82 insertions, 0 deletions

diff --git a/core/java/android/util/LogWriter.java b/core/java/android/util/LogWriter.java
new file mode 100644
index 0000000..ce30631
--- /dev/null
+++ b/core/java/android/util/LogWriter.java
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.util;
+
+import java.io.Writer;
+
+/** @hide */
+public class LogWriter extends Writer {
+    private final int mPriority;
+    private final String mTag;
+    private final int mBuffer;
+    private StringBuilder mBuilder = new StringBuilder(128);
+
+    /**
+     * Create a new Writer that sends to the log with the given priority
+     * and tag.
+     *
+     * @param priority The desired log priority:
+     * {@link android.util.Log#VERBOSE Log.VERBOSE},
+     * {@link android.util.Log#DEBUG Log.DEBUG},
+     * {@link android.util.Log#INFO Log.INFO},
+     * {@link android.util.Log#WARN Log.WARN}, or
+     * {@link android.util.Log#ERROR Log.ERROR}.
+     * @param tag A string tag to associate with each printed log statement.
+     */
+    public LogWriter(int priority, String tag) {
+        mPriority = priority;
+        mTag = tag;
+        mBuffer = Log.LOG_ID_MAIN;
+    }
+
+    /**
+     * @hide
+     * Same as above, but buffer is one of the LOG_ID_ constants from android.util.Log.
+     */
+    public LogWriter(int priority, String tag, int buffer) {
+        mPriority = priority;
+        mTag = tag;
+        mBuffer = buffer;
+    }
+
+    @Override public void close() {
+        flushBuilder();
+    }
+
+    @Override public void flush() {
+        flushBuilder();
+    }
+
+    @Override public void write(char[] buf, int offset, int count) {
+        for(int i = 0; i < count; i++) {
+            char c = buf[offset + i];
+            if ( c == '\n') {
+                flushBuilder();
+            }
+            else {
+                mBuilder.append(c);
+            }
+        }
+    }
+
+    private void flushBuilder() {
+        if (mBuilder.length() > 0) {
+            Log.println_native(mBuffer, mPriority, mTag, mBuilder.toString());
+            mBuilder.delete(0, mBuilder.length());
+        }
+    }
+}