您当前的位置: 我做的有一个ListView列表，每个列表项都有一个ProgreeBar，但是我用SimpleAdapter，向里面添加基本的TextView可以成功添加，但是不知道如何添加进度条，不知道我说的是否详细
- Java code
package softfc.app;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import android.app.Activity;
import android.app.ListActivity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.SimpleAdapter;
public class TestActivity extends Activity {
private SimpleAdapter listItemAdapter = null;
private ArrayList<HashMap<String, Object>> listItem = null;
private ListView myList = null;
private Button addBtn=null;
private Button removeBtn=null;
private ProgressBar progressBar = null;
private int progress = 10;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
listItem = new ArrayList<HashMap<String, Object>>();
listItemAdapter = new SimpleAdapter(this, listItem,
R.layout.mylayout,
new String[] { "image",
"title", "text","progress" },
new int[] {
R.id.ItemImage,
R.id.ItemTitle,
R.id.ItemText ,
R.id.progressBar});
myList = (ListView) findViewById(R.id.TaxiList);
myList.setAdapter(listItemAdapter);
addBtn = (Button)findViewById(R.id.addBtn);
addBtn.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
addItem();
}
});
removeBtn = (Button)findViewById(R.id.removeBtn);
removeBtn.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
deleteItem();
}
});
}
private void addItem() {
HashMap<String, Object> map = new HashMap<String, Object>();
map.put("image", R.drawable.icon);
map.put("title", "标题");
map.put("text", "要显示的内容");
map.put("progress", new ProgressBar(this));
listItem.add(map);
listItemAdapter.notifyDataSetChanged();
}
private void deleteItem() {
int size = listItem.size();
if (size > 0) {
listItem.remove(listItem.size() - 1);
listItemAdapter.notifyDataSetChanged();
}
}
}
------解决方案--------------------
写一个类继承BaseAdapter，里面getView方法可以绑定自己定义的控件
------解决方案--------------------
------解决方案--------------------
- Java code
import android.app.ListActivity;
import android.os.Bundle;
import android.os.Handler;
import android.view.Gravity;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.widget.AbsListView;
import android.widget.AbsListView.OnScrollListener;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.TextView;
public class ListViewActivity extends ListActivity implements OnScrollListener {
private LinearLayout mLoadLayout;
private LinearLayout mProgressLoadLayout;
private ListView mListView;
private ListViewAdapter mListViewAdapter = new ListViewAdapter();
private int mLastItem = 0;
private int mCount = 41;
private final Handler mHandler = new Handler();// 在Handler中加载数据
private final LayoutParams mLayoutParams = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
int scrollState;// 全局变量，用来记录ScrollView的滚动状态，1表示开始滚动，2表示正在滚动，0表示滚动停止
int visibleItemCount;// 当前可见页面中的Item总数
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
/**
* "加载项"布局，此布局被添加到ListView的Footer中。
*/
mLoadLayout = new LinearLayout(this);
mLoadLayout.setMinimumHeight(30);
mLoadLayout.setGravity(Gravity.CENTER);
mLoadLayout.setOrientation(LinearLayout.VERTICAL);
/*
* 当点击按钮的时候显示这个View，此View使用水平方式布局，左边是一个进度条，右边是文本，默认设为不可见
*/
mProgressLoadLayout = new LinearLayout(this);
mProgressLoadLayout.setMinimumHeight(30);
mProgressLoadLayout.setGravity(Gravity.CENTER);
mProgressLoadLayout.setOrientation(LinearLayout.HORIZONTAL);
ProgressBar mProgressBar = new ProgressBar(this);
mProgressBar.setPadding(0, 0, 15, 0);
mProgressLoadLayout.addView(mProgressBar, mLayoutParams);// 为布局添加进度条
TextView mTipContent = new TextView(this);
mTipContent.setText("加载中...");
mProgressLoadLayout.addView(mTipContent, mLayoutParams);// 为布局添加文本
mProgressLoadLayout.setVisibility(View.GONE);// 默认设为不可见，注意View.GONE和View.INVISIBLE的区别
mLoadLayout.addView(mProgressLoadLayout);// 把之前的布局以View对象添加进来
final Button button = new Button(this);
button.setText("加载更多");
// 添加按钮
mLoadLayout.addView(button, new LayoutParams(LayoutParams.FILL_PARENT,
LayoutParams.WRAP_CONTENT));
button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (mLastItem == mListViewAdapter.count
&& scrollState == OnScrollListener.SCROLL_STATE_IDLE) {
// 当点击时把带进度条的Layout设为可见，把Button设为不可见
mProgressLoadLayout.setVisibility(View.VISIBLE);
button.setVisibility(View.GONE);
if (mListViewAdapter.count <= mCount) {
mHandler.postDelayed(new Runnable() {
@Override
public void run() {
mListViewAdapter.count += 10;
mListViewAdapter.notifyDataSetChanged();
mListView.setSelection(mLastItem
- visibleItemCount + 1);
// 获取数据成功时把Layout设为不可见，把Button设为可见
mProgressLoadLayout.setVisibility(View.GONE);
button.setVisibility(View.VISIBLE);
}
}, 2000);
}
}
}
});
mListView = getListView();
mListView.addFooterView(mLoadLayout);
setListAdapter(mListViewAdapter);
mListView.setOnScrollListener(this);
}
@Override
public void onScroll(AbsListView view, int firstVisibleItem,
int visibleItemCount, int totalItemCount) {
this.visibleItemCount = visibleItemCount;
mLastItem = firstVisibleItem + visibleItemCount - 1;
if (mListViewAdapter.count > mCount) {
mListView.removeFooterView(mLoadLayout);
}
}
@Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
this.scrollState = scrollState;
}
class ListViewAdapter extends BaseAdapter {
int count = 10;
public int getCount() {
return count;
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View view, ViewGroup parent) {
TextView mTextView;
if (view == null) {
mTextView = new TextView(ListViewActivity.this);
} else {
mTextView = (TextView) view;
}
mTextView.setText("Item " + position);
mTextView.setTextSize(20f);
mTextView.setGravity(Gravity.CENTER);
mTextView.setHeight(60);
return mTextView;
}
}
}