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);
-        }
-    }
-
 }