Simplify flash log screen

app/src/main/java/com/topjohnwu/magisk/FlashActivity.java

@@ -4,13 +4,12 @@ import android.content.Intent;
 import android.net.Uri;
 import android.os.Bundle;
 import android.support.v7.app.ActionBar;
-import android.support.v7.widget.RecyclerView;
 import android.support.v7.widget.Toolbar;
-import android.view.LayoutInflater;
+import android.text.TextUtils;
 import android.view.View;
-import android.view.ViewGroup;
 import android.widget.Button;
 import android.widget.LinearLayout;
+import android.widget.ScrollView;
 import android.widget.TextView;
 
 import com.topjohnwu.magisk.asyncs.FlashZip;
@@ -19,8 +18,6 @@ import com.topjohnwu.magisk.components.Activity;
 import com.topjohnwu.magisk.container.AdaptiveList;
 import com.topjohnwu.magisk.utils.Shell;
 
-import java.util.List;
-
 import butterknife.BindView;
 import butterknife.ButterKnife;
 import butterknife.OnClick;
@@ -37,9 +34,10 @@ public class FlashActivity extends Activity {
     public static final String FLASH_MAGISK = "magisk";
 
     @BindView(R.id.toolbar) Toolbar toolbar;
-    @BindView(R.id.flash_logs) RecyclerView flashLogs;
+    @BindView(R.id.txtLog) TextView flashLogs;
     @BindView(R.id.button_panel) LinearLayout buttonPanel;
     @BindView(R.id.reboot) Button reboot;
+    @BindView(R.id.scrollView) ScrollView sv;
 
     @OnClick(R.id.no_thanks)
     public void dismiss() {
@@ -56,7 +54,13 @@ public class FlashActivity extends Activity {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_flash);
         ButterKnife.bind(this);
-        AdaptiveList<String> rootShellOutput = new AdaptiveList<>(flashLogs);
+        AdaptiveList<String> rootShellOutput = new AdaptiveList<String>() {
+            @Override
+            public synchronized void updateView() {
+                flashLogs.setText(TextUtils.join("\n", this));
+                sv.postDelayed(() -> sv.fullScroll(ScrollView.FOCUS_DOWN), 10);
+            }
+        };
         setSupportActionBar(toolbar);
         ActionBar ab = getSupportActionBar();
         if (ab != null) {
@@ -67,8 +71,6 @@ public class FlashActivity extends Activity {
         if (!Shell.rootAccess())
             reboot.setVisibility(View.GONE);
 
-        flashLogs.setAdapter(new FlashLogAdapter(rootShellOutput));
-
         // We must receive a Uri of the target zip
         Intent intent = getIntent();
         Uri uri = intent.getData();
@@ -113,41 +115,4 @@ public class FlashActivity extends Activity {
     public void onBackPressed() {
         // Prevent user accidentally press back button
     }
-
-    private static class FlashLogAdapter extends RecyclerView.Adapter<ViewHolder> {
-
-        private List<String> mList;
-
-        FlashLogAdapter(List<String> list) {
-            mList = list;
-        }
-
-        @Override
-        public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
-            View view = LayoutInflater.from(parent.getContext())
-                    .inflate(R.layout.list_item_flashlog, parent, false);
-            return new ViewHolder(view);
-        }
-
-        @Override
-        public void onBindViewHolder(ViewHolder holder, int position) {
-            holder.text.setText(mList.get(position));
-        }
-
-        @Override
-        public int getItemCount() {
-            return mList.size();
-        }
-    }
-
-    public static class ViewHolder extends RecyclerView.ViewHolder {
-
-        @BindView(R.id.textView) TextView text;
-
-        public ViewHolder(View itemView) {
-            super(itemView);
-            ButterKnife.bind(this, itemView);
-        }
-    }
-
 }

app/src/main/java/com/topjohnwu/magisk/MagiskLogFragment.java

@@ -117,7 +117,7 @@ public class MagiskLogFragment extends Fragment {
             switch (mode) {
                 case 0:
                     StringBuildingList logList = new StringBuildingList();
-                    Shell.su(logList, "cat " + MAGISK_LOG);
+                    Shell.su(logList, "cat " + MAGISK_LOG + " | tail -n 1000");
                     return logList.toString();
 
                 case 1:
@@ -164,8 +164,8 @@ public class MagiskLogFragment extends Fragment {
                         txtLog.setText(R.string.log_is_empty);
                     else
                         txtLog.setText(llog);
-                    svLog.post(() -> svLog.scrollTo(0, txtLog.getHeight()));
+                    svLog.postDelayed(() -> svLog.fullScroll(ScrollView.FOCUS_DOWN), 100);
-                    hsvLog.post(() -> hsvLog.scrollTo(0, 0));
+                    hsvLog.postDelayed(() -> hsvLog.fullScroll(ScrollView.FOCUS_LEFT), 100);
                     break;
                 case 2:
                     boolean bool = (boolean) o;

app/src/main/java/com/topjohnwu/magisk/container/AdaptiveList.java

@@ -1,28 +1,18 @@
 package com.topjohnwu.magisk.container;
 
-import android.support.v7.widget.RecyclerView;
-
 import java.util.ArrayList;
 
-public class AdaptiveList<E> extends ArrayList<E> {
+public abstract class AdaptiveList<E> extends ArrayList<E> {
 
     private Runnable callback;
-    private RecyclerView mView;
 
-    public AdaptiveList(RecyclerView v) {
+    public abstract void updateView();
-        mView = v;
-    }
-
-    public void updateView() {
-        mView.getAdapter().notifyDataSetChanged();
-        mView.scrollToPosition(mView.getAdapter().getItemCount() - 1);
-    }
 
     public void setCallback(Runnable cb) {
         callback = cb;
     }
 
-    public boolean add(E e) {
+    public synchronized boolean add(E e) {
         boolean ret = super.add(e);
         if (ret) {
             if (callback == null) {

app/src/main/res/layout/activity_flash.xml

@@ -3,27 +3,34 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:orientation="vertical"
     android:background="@android:color/black"
     tools:context="com.topjohnwu.magisk.FlashActivity">
 
     <include layout="@layout/toolbar"/>
 
-    <HorizontalScrollView
+    <ScrollView
+        android:id="@+id/scrollView"
         android:layout_weight="1"
         android:layout_width="match_parent"
         android:layout_height="0dp">
 
-        <android.support.v7.widget.RecyclerView
+        <HorizontalScrollView
-            android:id="@+id/flash_logs"
+            android:layout_width="match_parent"
-            android:layout_width="wrap_content"
+            android:layout_height="wrap_content">
-            android:layout_height="match_parent"
-            app:layoutManager="android.support.v7.widget.LinearLayoutManager">
 
-        </android.support.v7.widget.RecyclerView>
+            <TextView
+                android:id="@+id/txtLog"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:fontFamily="monospace"
+                android:padding="8dp"
+                android:textColor="@android:color/white"
+                android:textSize="10sp" />
 
-    </HorizontalScrollView>
+        </HorizontalScrollView>
+
+    </ScrollView>
 
     <LinearLayout
         android:id="@+id/button_panel"

app/src/main/res/layout/list_item_flashlog.xml

@@ -1,9 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<TextView
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    android:id="@+id/textView"
-    android:layout_width="wrap_content"
-    android:layout_height="wrap_content"
-    android:fontFamily="monospace"
-    android:textColor="@android:color/white"
-    android:textSize="10sp" />