1 files changed, 158 insertions, 0 deletions
diff --git a/ui/window/MultiWindowPlayground/kotlinApp/Application/src/main/java/com/android/multiwindowplayground/activities/LoggingActivity.kt b/ui/window/MultiWindowPlayground/kotlinApp/Application/src/main/java/com/android/multiwindowplayground/activities/LoggingActivity.kt
new file mode 100644
index 00000000..313bb109
--- /dev/null
+++ b/ui/window/MultiWindowPlayground/kotlinApp/Application/src/main/java/com/android/multiwindowplayground/activities/LoggingActivity.kt
@@ -0,0 +1,158 @@
+/*
+ * Copyright (C) 2017 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 com.android.multiwindowplayground.activities
+
+import android.content.res.Configuration
+import android.os.Bundle
+import android.os.PersistableBundle
+import android.support.annotation.ColorRes
+import android.support.annotation.StringRes
+import android.support.v7.app.AppCompatActivity
+import android.view.View
+import android.widget.TextView
+import com.android.multiwindowplayground.R
+import com.android.multiwindowplayground.logger.Log
+import com.android.multiwindowplayground.logger.LogFragment
+import com.android.multiwindowplayground.logger.LogWrapper
+import com.android.multiwindowplayground.logger.MessageOnlyLogFilter
+
+const val LOG_TAG = "LoggingActivity"
+
+/**
+ * Activity that logs all key lifecycle callbacks to [Log].
+ * Output is also logged to the UI into a [LogFragment] through [initializeLogging] and
+ * [stopLogging].
+ */
+abstract class LoggingActivity : AppCompatActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        Log.d(LOG_TAG, "onCreate")
+    }
+
+    override fun onCreate(savedInstanceState: Bundle?, persistentState: PersistableBundle?) {
+        super.onCreate(savedInstanceState, persistentState)
+        Log.d(LOG_TAG, "onCreatePersistable")
+    }
+
+    override fun onStart() {
+        super.onStart()
+        // Start logging to UI.
+        initializeLogging()
+
+        Log.d(LOG_TAG, "onStart")
+    }
+
+    override fun onRestoreInstanceState(savedInstanceState: Bundle?) {
+        super.onRestoreInstanceState(savedInstanceState)
+        Log.d(LOG_TAG, "onRestoreInstanceState")
+    }
+
+    override fun onRestoreInstanceState(savedInstanceState: Bundle?, persistentState: PersistableBundle?) {
+        super.onRestoreInstanceState(savedInstanceState, persistentState)
+        Log.d(LOG_TAG, "onRestoreInstanceStatePersistable")
+    }
+
+    override fun onResume() {
+        super.onResume()
+        Log.d(LOG_TAG, "onResume")
+    }
+
+    override fun onPostCreate(savedInstanceState: Bundle?) {
+        super.onPostCreate(savedInstanceState)
+        Log.d(LOG_TAG, "onPostCreate")
+    }
+
+    override fun onPostCreate(savedInstanceState: Bundle?, persistentState: PersistableBundle?) {
+        super.onPostCreate(savedInstanceState, persistentState)
+        Log.d(LOG_TAG, "onPostCreate")
+    }
+
+    override fun onConfigurationChanged(newConfig: Configuration) {
+        super.onConfigurationChanged(newConfig)
+        Log.d(LOG_TAG, "onConfigurationChanged: $newConfig")
+    }
+
+    override fun onMultiWindowModeChanged(isInMultiWindowMode: Boolean, newConfig: Configuration?) {
+        super.onMultiWindowModeChanged(isInMultiWindowMode, newConfig)
+        Log.d(LOG_TAG, "onMultiWindowModeChanged: $isInMultiWindowMode")
+    }
+
+    override fun onSaveInstanceState(outState: Bundle?) {
+        super.onSaveInstanceState(outState)
+        Log.d(LOG_TAG, "onSaveInstanceState")
+    }
+
+    override fun onSaveInstanceState(outState: Bundle?, outPersistentState: PersistableBundle?) {
+        super.onSaveInstanceState(outState, outPersistentState)
+        Log.d(LOG_TAG, "onSaveInstanceStatePersistable")
+    }
+
+    override fun onPause() {
+        super.onPause()
+        Log.d(LOG_TAG, "onPause")
+    }
+
+    override fun onStop() {
+        super.onStop()
+        // Stop logging to UI when this activity is stopped.
+        stopLogging()
+
+        Log.d(LOG_TAG, "onStop")
+    }
+
+    override fun onRestart() {
+        super.onRestart()
+        Log.d(LOG_TAG, "onRestart")
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        Log.d(LOG_TAG, "onDestroy")
+    }
+
+    /**
+     * Set up targets to receive log data
+     */
+    private fun initializeLogging() {
+        // Using Log, front-end to the logging chain, emulates android.util.log method signatures.
+        // Wraps Android's native log framework
+        val logWrapper = LogWrapper()
+        Log.logNode = logWrapper
+
+        // Filter strips out everything except the message text.
+        val msgFilter = MessageOnlyLogFilter()
+        logWrapper.next = msgFilter
+
+        // On screen logging via a fragment with a TextView.
+        val logFragment = supportFragmentManager.findFragmentById(R.id.log_fragment) as LogFragment
+        msgFilter.next = logFragment.logView
+    }
+
+    private fun stopLogging() {
+        Log.logNode = null
+    }
+
+    protected fun setDescription(@StringRes textId: Int) {
+        findViewById<TextView>(R.id.description).setText(textId)
+    }
+
+    protected fun setBackgroundColor(@ColorRes colorId: Int) {
+        findViewById<View>(R.id.scrollview).setBackgroundResource(colorId)
+    }
+
+}