Android Open Source - NPlayer Search Activity

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License

The source code is released under:
Apache License
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Java Source Code

package com.qinxiandiqi.nplayer;
//from  w  ww. j  ava  2 s  . com
import java.io.File;
import java.util.ArrayList;
import java.util.List;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;

import com.qinxiandiqi.utils.CodeUtils;
import com.qinxiandiqi.utils.FileUtils;

public class SearchActivity extends Activity {

  private ListView listView;
  private Button searchButton;
  private List<String> searchPathList;
  private String searchParentPath;
  private List<File> searchFileList;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_search);
    listView = (ListView) findViewById(R.id.searchlistview);
    searchButton = (Button) findViewById(R.id.searchbutton);
    searchPathList = new ArrayList<String>();
    searchFileList = new ArrayList<File>();
    searchParentPath = getIntent().getExtras().getString(
        CodeUtils.SEARCHPATHFOREXTRA);
    searchFileList = FileUtils.getSearchFileByPath(searchParentPath,
        searchFileList);
    SearchAdapter searchAdapter = new SearchAdapter(this);
    listView.setAdapter(searchAdapter);
  }

  public void searchOnClick(View v) {
    Intent intent = getIntent();
    intent.putStringArrayListExtra(CodeUtils.SEARCHPATHLIST,
        (ArrayList<String>) searchPathList);
    SearchActivity.this.setResult(CodeUtils.SEARCHRESULTCODE, intent);
    SearchActivity.this.finish();
  }

  @Override
  protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == CodeUtils.SEARCHREQUESTCODE
        && resultCode == CodeUtils.SEARCHRESULTCODE) {
      SearchActivity.this.setResult(CodeUtils.SEARCHRESULTCODE, data);
      SearchActivity.this.finish();
    }
  }

//  ??????????
  public class SearchAdapter extends BaseAdapter {

    private LayoutInflater inflater;
    private Boolean[] state = new Boolean[searchFileList.size()];

    public SearchAdapter(Context context) {
      super();
      this.inflater = LayoutInflater.from(context);
      for (int i = 0; i < state.length; i++) {
        state[i] = false;
      }
    }

    @Override
    public int getCount() {
      return searchFileList.size();
    }

    @Override
    public Object getItem(int position) {
      return searchFileList.get(position);
    }

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

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
      ViewHolder viewHolder;
      if (convertView == null) {
        convertView = inflater.inflate(R.layout.searchitem, null);
        viewHolder = new ViewHolder();
        viewHolder.imageView = (ImageView) convertView
            .findViewById(R.id.searchitemimage);
        viewHolder.textView = (TextView) convertView
            .findViewById(R.id.searchitemtext);
        viewHolder.checkBox = (CheckBox) convertView
            .findViewById(R.id.searchitemcheckbox);
        convertView.setTag(viewHolder);
      } else {
//        Log.i(CodeUtils.SEARCHTAG, "view is reuse");
        viewHolder = (ViewHolder) convertView.getTag();
      }
      viewHolder.textView.setText(searchFileList.get(position).getName());
      if (position == 0) {
        viewHolder.imageView.setImageResource(R.drawable.upback);
        viewHolder.textView.setOnClickListener(new OnClickListener() {
          @Override
          public void onClick(View v) {
            SearchActivity.this.finish();
          }
        });
      } else {
        if (searchFileList.get(position).isDirectory()) {
          viewHolder.imageView.setImageResource(R.drawable.folder);
          viewHolder.textView
              .setOnClickListener(new OnClickFolderListener(
                  position));
        } else {
          viewHolder.imageView.setImageResource(R.drawable.file);
          viewHolder.textView
              .setOnClickListener(new OnClickFileListener(
                  position, state, viewHolder.checkBox));
        }
      }
      viewHolder.checkBox
          .setOnCheckedChangeListener(new SearchItemOnCheckedChangeListener(
              position, state));
      viewHolder.checkBox.setChecked(state[position]);
//      Log.i(CodeUtils.SEARCHTAG, "request" + position + " and state="
//          + state[position] + " and length=" + state.length);
      return convertView;
    }

//    ??????????????
    public class OnClickFolderListener implements OnClickListener {
      private int id;

      public OnClickFolderListener(int id) {
        this.id = id;
      }

      @Override
      public void onClick(View v) {
        Intent intent = new Intent(SearchActivity.this,
            SearchActivity.class);
        intent.putExtra(CodeUtils.SEARCHPATHFOREXTRA, searchFileList
            .get(id).getAbsolutePath());
        SearchActivity.this.startActivityForResult(intent,
            CodeUtils.SEARCHREQUESTCODE);
      }

    }

//    ?????????????
    public class OnClickFileListener implements OnClickListener {
      private CheckBox checkBox;
      private int id;
      private Boolean[] state;

      public OnClickFileListener(int id, Boolean[] state,
          CheckBox checkBox) {
        this.checkBox = checkBox;
        this.id = id;
        this.state = state;
      }

      @Override
      public void onClick(View v) {
        state[id] = !state[id];
        checkBox.setChecked(state[id]);
      }
    }

//    ?????????????????
    public class SearchItemOnCheckedChangeListener implements
        OnCheckedChangeListener {

      private int id;
      private Boolean[] state;

      public SearchItemOnCheckedChangeListener(int id, Boolean[] state) {
        this.id = id;
        this.state = state;
      }

      @Override
      public void onCheckedChanged(CompoundButton buttonView,
          boolean isChecked) {
        state[id] = isChecked;
        if (isChecked) {
          searchPathList
              .add(searchFileList.get(id).getAbsolutePath());
        } else {
          searchPathList.remove(searchFileList.get(id)
              .getAbsolutePath());
        }
        if (searchPathList.isEmpty() || searchPathList == null) {
          searchButton.setVisibility(Button.INVISIBLE);
        } else {
          searchButton.setVisibility(Button.VISIBLE);
        }
      }
    }
  }

  static class ViewHolder {
    public ImageView imageView;
    public TextView textView;
    public CheckBox checkBox;
  }
}
Java Source Code List
