使用ListView控件实现漂亮的自定义表格效果实例

[align=center]使用ListView实现股票行情显示效果图如下，红色表示股价上涨，绿色表示股价下跌。
[/align]



第1步，定义color.xml如下

<?xml version="1.0" encoding="utf-8"?>
<resources>

<color name="color_dark_grey">#808080</color>
<color name="color_black">#000000</color>
<color name="color_green">#00FF00</color>
<color name="color_red">#FF0000</color>
<color name="color_white">#FFFFFF</color>

</resources>

第2步，定义style.xml文件如下

<?xml version="1.0" encoding="utf-8"?>
<resources>

<!-- Define the list items style begin -->
<style name="list_item_seperator_layout">
<item name="android:layout_width">fill_parent</item>
<item name="android:layout_height">1dip</item>
<item name="android:background">@color/color_dark_grey</item>
</style>

<style name="list_item_cell_seperator_layout">
<item name="android:layout_width">1dip</item>
<item name="android:layout_height">fill_parent</item>
<item name="android:background">@color/color_dark_grey</item>
</style>

<!-- Define the list items style end -->
</resources>

第3步，定义ListHeader的layout文件，stock_list_header.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content">

<TableLayout android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:stretchColumns="3">

<TableRow android:id="@+id/stock_list_header_row">

<View style="@style/list_item_cell_seperator_layout"/>

<TextView android:id="@+id/stock_list_header_code"
android:text="@string/stock_code"
android:layout_width="60dip"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:padding="2dip"
/>

<View style="@style/list_item_cell_seperator_layout"/>

<TextView android:id="@+id/stock_list_header_symbol"
android:text="@string/stock_symbol"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:padding="2dip"
/>

<View style="@style/list_item_cell_seperator_layout"/>

<TextView android:id="@+id/stock_list_header_last_price"
android:text="@string/stock_last_price"
android:layout_width="60dip"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:padding="2dip"
/>

<View style="@style/list_item_cell_seperator_layout"/>

<TextView android:id="@+id/stock_list_header_price_change"
android:text="@string/stock_price_change"
android:layout_width="50dip"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:padding="2dip"
/>

<View style="@style/list_item_cell_seperator_layout"/>

<TextView android:id="@+id/stock_list_header_price_change_percentage"
android:text="@string/stock_price_change_percent"
android:layout_width="50dip"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:padding="2dip"
/>

<View style="@style/list_item_cell_seperator_layout"/>
</TableRow>

</TableLayout>

</LinearLayout>

<View style="@style/list_item_cell_seperator_layout"/>是用来在每个单元格之间显示出一条垂直的分割线，使单元格之间相互分割开来。

第4步，定义ListItem的布局文件，stock_list_item.xml如下

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content">

<TableLayout android:id="@+id/stock_list_item_table_layout"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:stretchColumns="3">

<TableRow android:id="@+id/stock_list_row">

<View style="@style/list_item_cell_seperator_layout"/>

<TextView android:id="@+id/stock_code"
android:layout_width="60dip"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:padding="2dip"
/>

<View style="@style/list_item_cell_seperator_layout"/>

<TextView android:id="@+id/stock_symbol"
android:layout_width="1dip"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:padding="2dip"
/>

<View style="@style/list_item_cell_seperator_layout"/>

<TextView android:id="@+id/stock_last_price"
android:layout_width="60dip"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:padding="2dip"
/>

<View style="@style/list_item_cell_seperator_layout"/>

<TextView android:id="@+id/stock_change_price"
android:layout_width="50dip"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:padding="2dip"
/>

<View style="@style/list_item_cell_seperator_layout"/>

<TextView android:id="@+id/stock_change_percentage"
android:layout_width="50dip"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:padding="2dip"
/>

<View style="@style/list_item_cell_seperator_layout"/>

</TableRow>

</TableLayout>

</LinearLayout>

第5步，定义stock list activity的layout文件stock_list.xml,如下

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>

<View style="@style/list_item_seperator_layout"/>

<include layout="@layout/stock_list_header"/>

<View style="@style/list_item_seperator_layout"/>

<ListView
android:id="@+id/stock_list_view"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:scrollingCache="true"
android:cacheColorHint="#00000000"
android:fastScrollEnabled="true"
android:focusable="true"
android:divider="@color/color_dark_grey"
android:dividerHeight="1dip"
/>

</LinearLayout>

<View style="@style/list_item_seperator_layout"/>是为了在Header的上下方显示一条线来分割header和list.可能有人会问，为什么这里不直接用ListView控件的header呢？
这是因为我们为了使ListView在滚动过程中header始终固定在List的最上方，不会随着ListView的滚动而消失

到此为止，layout布局文件就基本上定义完了，下面就是如何在代码中实现了

StockListActivity.java

package com.android.msoft.mfinance.ui;

import com.android.msoft.mfinance.R;
import com.android.msoft.mfinance.provider.Stock;
import com.android.msoft.mfinance.provider.StockMarket.StockMarketColumns;
import com.android.msoft.mfinance.ui.MFinancePreferenceActivity.BGColor;
import com.android.msoft.mfinance.ui.MFinancePreferenceActivity.TextSize;
import com.android.msoft.mfinance.ui.MFinancePreferenceActivity.UpDownColor;

import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.util.Log;
import android.util.TypedValue;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.WindowManager;
import android.widget.ListView;
import android.widget.TableRow;
import android.widget.TextView;

public class StockListActivity extends Activity {

private static final String TAG = "com.android.msoft.mfinance.ui.StockListActivity";
private SharedPreferences mPreference;
private TextView mCodeTextView;
private TextView mSymbolTextView;
private TextView mLastPriceTextView;
private TextView mPriceChangeTextView;
private TextView mPriceChangePercentageTextView;
private ListView mStockListView;
private TableRow mStockListHeader;
private float mTextSize;

private int mBgColor;
private int mDownTextColor;
private int mUpTextColor;
private Cursor mStockListCursor;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.stock_list);

mPreference = PreferenceManager.getDefaultSharedPreferences(this);

refreshDisplayPreference();

mStockListHeader = (TableRow) findViewById(R.id.stock_list_header_row);
mCodeTextView = (TextView) findViewById(R.id.stock_list_header_code);
mSymbolTextView = (TextView) findViewById(R.id.stock_list_header_symbol);
mLastPriceTextView = (TextView) findViewById(R.id.stock_list_header_last_price);
mPriceChangeTextView = (TextView) findViewById(R.id.stock_list_header_price_change);
mPriceChangePercentageTextView = (TextView) findViewById(R.id.stock_list_header_price_change_percentage);

mStockListView = (ListView) findViewById(R.id.stock_list_view);

refreshStockListHeader();

mStockListCursor = getContentResolver().query(Stock.CONTENT_URI_STOCK_WITH_MARKET,
null, null, null,
StockMarketColumns.CHANGE_PRICE_PERCENT + " DESC");

StockListAdapter listViewAdpater = new StockListAdapter(this, mStockListCursor);
mStockListView.setAdapter(listViewAdpater);
}

@Override
protected void onDestroy() {
if (!mStockListCursor.isClosed()) {
mStockListCursor.close();
}

super.onDestroy();
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {

MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.stock_list_option_menu, menu);
return super.onCreateOptionsMenu(menu);
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId())
{
case R.id.stock_list_option_menu_settings:
Intent intent = new Intent(this, MFinancePreferenceActivity.class);
startActivity(intent);
break;
}

return super.onOptionsItemSelected(item);
}

private void refreshDisplayPreference() {

UpDownColor upAndDownColor = MFinancePreferenceActivity.UpDownColor.valueOf(mPreference
.getString("up_down_color", "RED_GREEN"));

if (0 == upAndDownColor.value) { // UP: RED DOWN: GREEN
mUpTextColor = getResources().getColor(R.color.color_red);
mDownTextColor = getResources().getColor(R.color.color_green);
} else { // DOWN: RED UP: GREEN
mUpTextColor = getResources().getColor(R.color.color_green);
mDownTextColor = getResources().getColor(R.color.color_red);
}

TextSize textSize = MFinancePreferenceActivity.TextSize.valueOf(mPreference.getString(
"text_size", "NORMAL"));
mTextSize = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, textSize.value,
getResources().getDisplayMetrics());

int colorResId = R.color.color_black;
BGColor bgColor = MFinancePreferenceActivity.BGColor.valueOf(mPreference.getString(
"bg_color", "BLACK"));

switch (bgColor.value) {
case 0:
colorResId = R.color.color_black;
break;

case 1:
colorResId = R.color.color_white;
break;

default:
Log.e(TAG, "invalid bg color");
}

mBgColor = getResources().getColor(colorResId);
}

public float getTextSize() {
return mTextSize;
}

public int getBgColor() {
return mBgColor;
}

public int getUpTextColor() {
return mUpTextColor;
}

public int getDownTextColor() {
return mDownTextColor;
}

private void refreshStockListHeader() {

mCodeTextView.setTextSize(mTextSize);
mSymbolTextView.setTextSize(mTextSize);
mLastPriceTextView.setTextSize(mTextSize);
mPriceChangeTextView.setTextSize(mTextSize);
mPriceChangePercentageTextView.setTextSize(mTextSize);

mStockListHeader.setBackgroundColor(mBgColor);
mStockListView.setBackgroundColor(mBgColor);
}
}

StockListAdapter.java

package com.android.msoft.mfinance.ui;

import com.android.msoft.mfinance.provider.Stock.StockColumns;
import com.android.msoft.mfinance.provider.StockMarket.StockMarketColumns;

import android.content.Context;
import android.database.Cursor;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;

public class StockListAdapter extends BaseAdapter {

private static final String TAG = "com.android.msoft.mfinance.ui.StockListAdapter";
private Cursor mStockListCursor;
private Context mContext;

private final int sCodeIndex;
private final int sSymbolIndex;
private final int sBoardIndex;
private final int sLastPriceIndex;
private final int sChangePriceIndex;
private final int sChangePricePercentIndex;

public StockListAdapter(Context context, Cursor cursor) {
mStockListCursor = cursor;
mContext = context;

sCodeIndex = mStockListCursor.getColumnIndex(StockColumns.CODE);
sSymbolIndex = mStockListCursor.getColumnIndex(StockColumns.SYMBOL);
sBoardIndex = mStockListCursor.getColumnIndex(StockColumns.BOARD);
sLastPriceIndex = mStockListCursor.getColumnIndex(StockMarketColumns.LAST_PRICE);
sChangePriceIndex = mStockListCursor.getColumnIndex(StockMarketColumns.CHANGE_PRICE);
sChangePricePercentIndex = mStockListCursor.getColumnIndex(StockMarketColumns.CHANGE_PRICE_PERCENT);
}

@Override
public int getCount() {
Log.d(TAG, "Stock list count:" + mStockListCursor.getCount());
return mStockListCursor.getCount();
}

@Override
public Object getItem(int position) {
return null;
}

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

@Override
public View getView(int position, View convertView, ViewGroup parent) {
StockListItem listItem;

mStockListCursor.moveToPosition(position);
if (null == convertView)
{
String code = mStockListCursor.getString(sCodeIndex);
String symbol = mStockListCursor.getString(sSymbolIndex);
String board = mStockListCursor.getString(sBoardIndex);
float lastPrice = mStockListCursor.getFloat(sLastPriceIndex);
float changePrice = mStockListCursor.getFloat(sChangePriceIndex);
float changePercent = mStockListCursor.getFloat(sChangePricePercentIndex);

listItem = new StockListItem(mContext, code, symbol, board, lastPrice, changePrice, changePercent);
}
else
{
listItem = (StockListItem)convertView;
}

return listItem;
}
}

StockListItem.java

package com.android.msoft.mfinance.ui;

import com.android.msoft.mfinance.R;

import android.content.Context;
import android.view.LayoutInflater;
import android.widget.LinearLayout;
import android.widget.TextView;

public class StockListItem extends LinearLayout {

public StockListItem(Context context, String code, String symbol, String board,
float lastPrice, float changePrice, float changePercent) {
super(context);

StockListActivity stockListActivity = (StockListActivity)context;
float textSize = stockListActivity.getTextSize();

LayoutInflater factory = LayoutInflater.from(context);
factory.inflate(R.layout.stock_list_item, this);

TextView codeTextView = (TextView) findViewById(R.id.stock_code);
codeTextView.setTextSize(textSize);
codeTextView.setText(code);

TextView symbolTextView = (TextView) findViewById(R.id.stock_symbol);
symbolTextView.setTextSize(textSize);
symbolTextView.setText(symbol);

TextView lastPriceTextView = (TextView) findViewById(R.id.stock_last_price);
lastPriceTextView.setTextSize(textSize);
lastPriceTextView.setText(Float.toString(lastPrice));

TextView changePriceTextView = (TextView) findViewById(R.id.stock_change_price);
changePriceTextView.setTextSize(textSize);
changePriceTextView.setText(Float.toString(changePrice));

TextView ChangePercentTextView = (TextView) findViewById(R.id.stock_change_percentage);
ChangePercentTextView.setTextSize(textSize);
ChangePercentTextView.setText(Float.toString(changePercent));

if (changePrice > 0)
{
int textColor = stockListActivity.getUpTextColor();

//            codeTextView.setTextColor(textColor);
//            symbolTextView.setTextColor(textColor);
lastPriceTextView.setTextColor(textColor);
changePriceTextView.setTextColor(textColor);
ChangePercentTextView.setTextColor(textColor);
}
else if (changePrice < 0)
{
int textColor = stockListActivity.getDownTextColor();

//            codeTextView.setTextColor(textColor);
//            symbolTextView.setTextColor(textColor);
lastPriceTextView.setTextColor(textColor);
changePriceTextView.setTextColor(textColor);
ChangePercentTextView.setTextColor(textColor);
}
}

}

到此就大功告成了，这个例子我们是通过View来画线条分割各个单元格的，另外我们还可以通过定义不同的背景色，通过背景色来达到相似的效果，这个不难，就不写了