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/*
* Copyright (C) 2007 The Android Open Source Project
*
* 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 com.example.android.apis.view;
import com.example.android.apis.Shakespeare;
import android.app.ListActivity;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.LinearLayout;
import android.widget.TextView;
/**
* A list view example where the data comes from a custom ListAdapter
*/
public class List4 extends ListActivity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Use our own list adapter
setListAdapter(new SpeechListAdapter(this));
}
/**
* A sample ListAdapter that presents content from arrays of speeches and
* text.
*
*/
private class SpeechListAdapter extends BaseAdapter {
public SpeechListAdapter(Context context) {
mContext = context;
}
/**
* The number of items in the list is determined by the number of speeches
* in our array.
*
* @see android.widget.ListAdapter#getCount()
*/
public int getCount() {
return Shakespeare.TITLES.length;
}
/**
* Since the data comes from an array, just returning the index is
* sufficent to get at the data. If we were using a more complex data
* structure, we would return whatever object represents one row in the
* list.
*
* @see android.widget.ListAdapter#getItem(int)
*/
public Object getItem(int position) {
return position;
}
/**
* Use the array index as a unique id.
*
* @see android.widget.ListAdapter#getItemId(int)
*/
public long getItemId(int position) {
return position;
}
/**
* Make a SpeechView to hold each row.
*
* @see android.widget.ListAdapter#getView(int, android.view.View,
* android.view.ViewGroup)
*/
public View getView(int position, View convertView, ViewGroup parent) {
SpeechView sv;
if (convertView == null) {
sv = new SpeechView(mContext, Shakespeare.TITLES[position],
Shakespeare.DIALOGUE[position]);
} else {
sv = (SpeechView) convertView;
sv.setTitle(Shakespeare.TITLES[position]);
sv.setDialogue(Shakespeare.DIALOGUE[position]);
}
return sv;
}
/**
* Remember our context so we can use it when constructing views.
*/
private Context mContext;
}
/**
* We will use a SpeechView to display each speech. It's just a LinearLayout
* with two text fields.
*
*/
private class SpeechView extends LinearLayout {
public SpeechView(Context context, String title, String words) {
super(context);
this.setOrientation(VERTICAL);
// Here we build the child views in code. They could also have
// been specified in an XML file.
mTitle = new TextView(context);
mTitle.setText(title);
addView(mTitle, new LinearLayout.LayoutParams(
LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));
mDialogue = new TextView(context);
mDialogue.setText(words);
addView(mDialogue, new LinearLayout.LayoutParams(
LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));
}
/**
* Convenience method to set the title of a SpeechView
*/
public void setTitle(String title) {
mTitle.setText(title);
}
/**
* Convenience method to set the dialogue of a SpeechView
*/
public void setDialogue(String words) {
mDialogue.setText(words);
}
private TextView mTitle;
private TextView mDialogue;
}
}
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