Add log window (fixes #311).

src/main/AndroidManifest.xml

@@ -25,7 +25,6 @@
             android:launchMode="singleTop">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
-
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
@@ -44,6 +43,14 @@
                 android:name="android.support.PARENT_ACTIVITY"
                 android:value=".activities.MainActivity" />
         </activity>
+        <activity
+            android:name=".activities.LogActivity"
+            android:label="@string/log_title"
+            android:parentActivityName=".activities.SettingsActivity">
+            <meta-data
+                android:name="android.support.PARENT_ACTIVITY"
+                android:value=".activities.SettingsActivity" />
+        </activity>
 
         <service android:name=".syncthing.SyncthingService" />
 

src/main/java/com/nutomic/syncthingandroid/activities/LogActivity.java

@@ -0,0 +1,161 @@
+package com.nutomic.syncthingandroid.activities;
+
+import android.content.Intent;
+import android.os.AsyncTask;
+import android.os.Bundle;
+import android.support.v7.widget.ShareActionProvider;
+import android.util.Log;
+import android.view.Menu;
+import android.view.MenuInflater;
+import android.view.MenuItem;
+import android.widget.EditText;
+
+import android.support.v4.view.MenuItemCompat;
+import android.widget.ScrollView;
+import android.widget.TextView;
+
+import com.nutomic.syncthingandroid.R;
+
+import java.io.BufferedReader;
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.io.InputStreamReader;
+
+/**
+ * Shows the log information from Syncthing.
+ */
+public class LogActivity extends SyncthingActivity {
+
+    private final static String TAG = "LogActivity";
+
+    private TextView mLog;
+    private boolean mSyncthingLog = true;
+    private AsyncTask mFetchLogTask;
+    private ScrollView mScrollView;
+    private Intent mShareIntent;
+
+    /**
+     * Initialize Log.
+     */
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        setContentView(R.layout.log_activity);
+        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
+
+        if (savedInstanceState != null) {
+            mSyncthingLog = savedInstanceState.getBoolean("syncthingLog");
+            invalidateOptionsMenu();
+        }
+
+        mLog = (TextView) findViewById(R.id.log);
+        mScrollView = (ScrollView) findViewById(R.id.scroller);
+
+        updateLog();
+    }
+
+    @Override
+    protected void onSaveInstanceState(Bundle outState) {
+        super.onSaveInstanceState(outState);
+        outState.putBoolean("syncthingLog", mSyncthingLog);
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        MenuInflater inflater = getMenuInflater();
+        inflater.inflate(R.menu.log_list, menu);
+
+        // Add the share button
+        MenuItem shareItem = menu.findItem(R.id.menu_share);
+        shareItem.setTitle(mSyncthingLog ? R.string.log_android_title : R.string.log_syncthing_title);
+        ShareActionProvider actionProvider = (ShareActionProvider) MenuItemCompat.getActionProvider(shareItem);
+        mShareIntent = new Intent();
+        mShareIntent.setAction(Intent.ACTION_SEND);
+        mShareIntent.setType("text/plain");
+        mShareIntent.putExtra(android.content.Intent.EXTRA_TEXT, mLog.getText());
+        actionProvider.setShareIntent(mShareIntent);
+
+        return true;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        switch (item.getItemId()) {
+            case R.id.switch_logs:
+                mSyncthingLog = !mSyncthingLog;
+                item.setTitle(mSyncthingLog ? R.string.log_android_title : R.string.log_syncthing_title);
+                updateLog();
+                return true;
+            default:
+                return super.onOptionsItemSelected(item);
+        }
+    }
+
+    private void scrollToBottom() {
+        mScrollView.post(new Runnable() {
+            @Override
+            public void run() {
+                mScrollView.scrollTo(0, mLog.getBottom());
+            }
+        });
+    }
+
+    private void updateLog() {
+        if (mFetchLogTask != null)
+            mFetchLogTask.cancel(true);
+        mLog.setText("Retrieving logs...");
+        mFetchLogTask = new AsyncTask<Void, Void, String>() {
+            @Override
+            protected String doInBackground(Void... params) {
+                return getLog(mSyncthingLog);
+            }
+            @Override
+            protected void onPostExecute(String log) {
+                mLog.setText(log);
+                if (mShareIntent != null)
+                    mShareIntent.putExtra(android.content.Intent.EXTRA_TEXT, log);
+                scrollToBottom();
+            }
+        }.execute();
+    }
+
+    private String getLog(final boolean syncthingLog) {
+        Process process = null;
+        DataOutputStream pOut = null;
+        try {
+            ProcessBuilder pb;
+            if (syncthingLog) {
+                pb = new ProcessBuilder("/system/bin/logcat", "-t", "300", "-s", "SyncthingNativeCode");
+            } else {
+                pb = new ProcessBuilder("/system/bin/logcat", "-t", "300", "'*'");
+            }
+            pb.redirectErrorStream(true);
+            process = pb.start();
+            BufferedReader bufferedReader = new BufferedReader(
+                    new InputStreamReader(process.getInputStream()), 8192);
+            StringBuilder log = new StringBuilder();
+            String line = "";
+            while ((line = bufferedReader.readLine()) != null) {
+                log.append(line);
+                log.append(System.getProperty("line.separator"));
+            }
+            return log.toString();
+        } catch (IOException e) {
+            Log.w(TAG, "Error reading Android log", e);
+        } finally {
+            try {
+                if (pOut != null) {
+                    pOut.close();
+                }
+            } catch (IOException e) {
+                Log.w(TAG, "Failed to close shell stream", e);
+            }
+            if (process != null) {
+                process.destroy();
+            }
+        }
+        return "";
+    }
+
+}

src/main/java/com/nutomic/syncthingandroid/activities/SettingsActivity.java

@@ -43,7 +43,7 @@ public class SettingsActivity extends SyncthingActivity {
         if (savedInstanceState != null) {
             mFragment = fm.getFragment(savedInstanceState,
                     savedInstanceState.getString("fragment_name"));
-        } else {
+        } else if (getIntent().getAction() != null) {
             switch (getIntent().getAction()) {
                 case ACTION_APP_SETTINGS_FRAGMENT:
                     setTitle(R.string.settings_title);
@@ -65,6 +65,9 @@ public class SettingsActivity extends SyncthingActivity {
                     throw new IllegalArgumentException(
                             "You must provide the requested fragment type as an extra.");
             }
+        } else{
+            setTitle(R.string.settings_title);
+            mFragment = new SettingsFragment();
         }
 
         fm.beginTransaction()

src/main/res/layout/log_activity.xml

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <ScrollView
+        android:id="@+id/scroller"
+        android:layout_width="fill_parent"
+        android:layout_height="fill_parent"
+        android:scrollbars="vertical"
+        android:fillViewport="true">
+
+        <TextView
+            android:id="@+id/log"
+            android:gravity="top"
+            android:textSize="10sp"
+            android:textIsSelectable="true"
+            android:layout_width="fill_parent"
+            android:layout_height="fill_parent" />
+
+    </ScrollView>
+
+</RelativeLayout>

src/main/res/menu/log_list.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <item
+        android:id="@+id/switch_logs"
+        android:title="@string/log_android_title"
+        app:showAsAction="always" />
+
+      <item
+        android:id="@+id/menu_share"
+        android:title="@string/share_title"
+        app:actionProviderClass="android.support.v7.widget.ShareActionProvider"
+        app:showAsAction="always" />
+
+</menu>

src/main/res/values/strings.xml

@@ -288,6 +288,12 @@ Please report any problems you encounter via Github.</string>
 
     <string name="category_about">About</string>
 
+    <!-- Settings item that opens the log activity -->
+    <string name="open_log">Open Log</string>
+
+    <!-- Summary for the log activity -->
+    <string name="open_log_summary">Open the Syncthing and Android log window</string>
+
     <!-- Settings item that opens issue tracker -->
     <string name="report_issue_title">Report Issue</string>
 
@@ -323,6 +329,25 @@ Please report any problems you encounter via Github.</string>
 
     <string name="create_folder_failed">Failed to create folder</string>
 
+    <!-- LogActivity -->
+
+
+    <!-- Title of the "log" activity -->
+    <string name="log_title">Log</string>
+
+    <!-- Title of the "log android" menu button -->
+    <string name="log_android_title">View Android Log</string>
+
+    <!-- Title of the "log Syncthing" menu button -->
+    <string name="log_syncthing_title">View Syncthing Log</string>
+
+    <!-- Title of the "share log" menu action -->
+    <string name="share_log_title">Share Log</string>
+
+    <!-- Title of the "share log" menu button -->
+    <string name="share_title">Share</string>
+
+
     <!-- SyncthingService -->
 
 

src/main/res/xml/app_settings.xml

@@ -126,6 +126,13 @@
     <PreferenceCategory
         android:title="@string/category_about">
 
+        <Preference
+            android:title="@string/open_log"
+            android:summary="@string/open_log_summary">
+            <intent
+                android:action=".activities.LogActivity" />
+        </Preference>
+
         <Preference
             android:title="@string/report_issue_title"
             android:summary="@string/report_issue_summary">