Android Open Source - SystemAppMover Efficient Adapter

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License

The source code is released under:

Apache License

Java Source Code

/*
 * Copyright 2014 Thomas Hoffmann/*  w  w w.jav a  2 s . c  o m*/
 * 
 * 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 de.j4velin.systemappmover;

import android.content.Context;
import android.content.pm.ApplicationInfo;
import android.os.Handler;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

public class EfficientAdapter extends BaseAdapter {

  private final LayoutInflater mInflater;
  private final Handler handler = new Handler();
  private final AppPicker ap;

  public EfficientAdapter(final Context c, final AppPicker a) {
    mInflater = LayoutInflater.from(c);
    ap = a;
  }

  public int getCount() {
    return ap.apps.size();
  }

  public Object getItem(int position) {
    return position;
  }

  public long getItemId(int position) {
    return position;
  }

  public View getView(final int position, View convertView, ViewGroup parent) {
    if (position < ap.apps.size()) {
      final ViewHolder holder;

      if (convertView == null || !(convertView.getTag() instanceof ViewHolder)) {
        convertView = mInflater.inflate(R.layout.listviewitem, null);
        holder = new ViewHolder();
        holder.text = (TextView) convertView.findViewById(R.id.text);
        holder.pack = (TextView) convertView.findViewById(R.id.pack);
        holder.icon = (ImageView) convertView.findViewById(R.id.icon);
        holder.system = (TextView) convertView.findViewById(R.id.system);
        convertView.setTag(holder);
      } else {
        holder = (ViewHolder) convertView.getTag();
      }

      handler.post(new Runnable() {
        public void run() {
          holder.text.setText(ap.apps.get(position).loadLabel(ap.pm));
          holder.pack.setText(ap.apps.get(position).packageName);
          holder.system.setVisibility(((ap.apps.get(position).flags & ApplicationInfo.FLAG_SYSTEM) == 1) ? View.VISIBLE
              : View.GONE);
          // sollte eig immer der fall sein, trotzdem
          // ArrayIndexOutofBounds crashreport erhalten
          if (position < ap.icons.size())
            holder.icon.setImageDrawable(ap.icons.get(position));
        }
      });

    }
    return convertView;
  }

  private class ViewHolder {
    TextView text;
    TextView pack;
    ImageView icon;
    TextView system;
  }

}

Java Source Code List

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