package com.example.dynamiclist; /** * 带有标题的listview */ import java.util.List; import android.content.Context; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.view.Gravity; import android.view.View; import android.view.ViewGroup; import android.widget.AdapterView; import android.widget.BaseAdapter; import android.widget.LinearLayout; import android.widget.ListView; import android.widget.TextView; public class CListView extends LinearLayout { private static LayoutParams FILL_FILL_LAYOUTPARAMS = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT, 1); private static LayoutParams WAP_WAP_LAYOUTPARAMS = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); private CAdapter cAdapter; /** 标题空间. */ private LinearLayout titleLayout; private String[] title; private ListView listView; /** 数据. */ private List<String[]> data; /** 列宽数据. */ private int[] itemWidth; /** 当前选中行. */ private int selectedPosition = -1; /** 自动列宽列. */ private int autoWidthIndex = -1; private AdapterView.OnItemClickListener onItemClickListener; /** 行背景颜色. */ private int[] rowsBackgroundColor; /** 选中行背景颜色. */ private int selectedBackgroundColor = Color.argb(200, 224, 243, 250); /** 标题背景颜色. */ private int titleBackgroundColor; /** 标题字体颜色. */ private int titleTextColor = Color.argb(255, 100, 100, 100); /** 内容字体颜色. */ private int contentTextColor = Color.argb(255, 100, 100, 100); /** 标题字体大小. */ private float titleTextSize = 0; /** 内容字体大小. */ private float contentTextSize = 0; /** * 初始化带标题ListView * @param context 父级上下文 * @param title 标题数组 * @param data 内容列表 */ public CListView(Context context, String[] title, List<String[]> data) { super(context); this.title = title; this.data = data; // 设定纵向布局 setOrientation(VERTICAL); // 设定背景为白色 setBackgroundColor(Color.WHITE); // 预先设定好每列的宽 this.itemWidth = new int[title.length]; autoWidthIndex = this.itemWidth.length - 1; // 计算列宽 calcColumnWidth(); // 添加title位置 titleLayout = new LinearLayout(getContext()); titleLayout.setBackgroundColor(Color.parseColor("#CCCCCC")); addView(titleLayout); // 绘制标题面板 drawTitleLayout(); // 添加listview listView = new ListView(getContext()); listView.setPadding(0, 2, 0, 0); cAdapter = new CAdapter(); listView.setAdapter(cAdapter); listView.setCacheColorHint(0); listView.setLayoutParams(FILL_FILL_LAYOUTPARAMS); listView.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { if (onItemClickListener != null) onItemClickListener.onItemClick(parent, view, position, id); setSelectedPosition(position); selectedPosition = position; cAdapter.notifyDataSetChanged(); } }); addView(listView); } /** * 绘制标题 */ private void drawTitleLayout() { titleLayout.removeAllViews(); for (int i = 0; i < title.length; i++) { TextView tv = new CTextView(titleLayout.getContext()); // TextView tv = new TextView(titleLayout.getContext()); tv.setTextColor(titleTextColor); tv.setGravity(Gravity.CENTER); tv.setText(title[i]); if (titleTextSize > 0) { tv.setTextSize(titleTextSize); } tv.setPadding(5, 0, 5, 0); if (i == autoWidthIndex) tv.setLayoutParams(CListView.FILL_FILL_LAYOUTPARAMS); else { tv.setWidth(itemWidth[i]); } titleLayout.addView(tv); } } /** * 计算列宽 * @return 是否有改动 */ private boolean calcColumnWidth() { boolean result = false; float textSize = new TextView(getContext()).getTextSize();//21px // 计算标题列宽 for (int i = 0; i < itemWidth.length; i++) { int w = (int) CListView.GetPixelByText((titleTextSize > 0) ? titleTextSize : textSize, title[i]); if (itemWidth[i] < w) { itemWidth[i] = w; result = true; } } // 计算内容列宽 if (contentTextSize > 0) { textSize = contentTextSize; } for (int i = 0; i < data.size(); i++) { for (int j = 0; j < itemWidth.length && j < data.get(i).length; j++) { int w = (int) CListView.GetPixelByText(textSize, data.get(i)[j]); if (itemWidth[j] < w) { itemWidth[j] = w; result = true; } } } return result; } /** * 计算字符串所占像素 * @param textSize 字体大小 * @param text 字符串 * @return 字符串所占像素 */ private static int GetPixelByText(float textSize, String text) { Paint mTextPaint = new Paint(); mTextPaint.setTextSize(textSize); // 指定字体大小 mTextPaint.setFakeBoldText(true); // 粗体 mTextPaint.setAntiAlias(true); // 非锯齿效果 return (int) (mTextPaint.measureText(text) + textSize); } /** * 主要用的Adapter * @author Cdisk */ class CAdapter extends BaseAdapter { /** * (non-Javadoc) * @see android.widget.Adapter#getCount() */ @Override public int getCount() { if (data == null) return 0; return data.size(); } /** * (non-Javadoc) * @see android.widget.Adapter#getItem(int) */ @Override public Object getItem(int position) { if (data == null) return null; return data.get(position); } /** * (non-Javadoc) * @see android.widget.Adapter#getItemId(int) */ @Override public long getItemId(int position) { return 0; } /** * (non-Javadoc) * @see android.widget.Adapter#getView(int, android.view.View, android.view.ViewGroup) */ @Override public View getView(int position, View convertView, ViewGroup parent) { // 初始化主layout LinearLayout contextLayout = new LinearLayout(CListView.this.getContext()); String[] dataItem = data.get(position); if (getSelectedPosition() == position) { // 为当前选中行 contextLayout.setBackgroundColor(selectedBackgroundColor); } else if (rowsBackgroundColor != null && rowsBackgroundColor.length > 0) { contextLayout.setBackgroundColor(rowsBackgroundColor[position % rowsBackgroundColor.length]); } for (int i = 0; i < title.length; i++) { TextView tv = new CTextView(contextLayout.getContext()); // TextView tv = new TextView(contextLayout.getContext()); tv.setTextColor(contentTextColor); tv.setGravity(Gravity.CENTER); if (i < dataItem.length) { tv.setText(dataItem[i]); } if (i == autoWidthIndex) tv.setLayoutParams(CListView.FILL_FILL_LAYOUTPARAMS); else { tv.setWidth(itemWidth[i]); } if (contentTextSize > 0) { tv.setTextSize(contentTextSize); } contextLayout.addView(tv); } return contextLayout; } } /** * 整体有改变时,刷新显示 */ public void definedSetChanged() { calcColumnWidth(); drawTitleLayout(); cAdapter.notifyDataSetChanged(); } /** * 设置选中时的监听器 * @param onItemClickListener */ public void setOnItemClickListener(AdapterView.OnItemClickListener onItemClickListener) { this.onItemClickListener = onItemClickListener; } /** * 设置行背景颜色, 多个颜色可以作为间隔色 * @param color 行背景颜色,可以为多个 */ public void setItemBackgroundColor(int... color) { rowsBackgroundColor = color; } /** * 数据总数 */ public int getCount() { if (data == null) return 0; return data.size(); } /** * 当前选中数据 * @param position * @return */ public String[] getItem(int position) { if (data == null) return null; return data.get(position); } /** * 设置当前选中位置 * @return */ public void setSelectedPosition(int selectedPosition) { this.selectedPosition = selectedPosition; } /** * 当前选中位置 * @return */ public int getSelectedPosition() { return selectedPosition; } /** * 设置被选中时的背景色 * @param color */ public void setSelectedBackgroundColor(int color) { selectedBackgroundColor = color; } /** * 设置标题背景色. * @param color */ public void setTitleBackgroundColor(int color) { titleBackgroundColor = color; titleLayout.setBackgroundColor(titleBackgroundColor); } /** * 设置标题文字颜色 * @param color */ public void setTitleTextColor(int color) { titleTextColor = color; for (int i = 0; i < titleLayout.getChildCount(); i++) { ((TextView) titleLayout.getChildAt(i)).setTextColor(titleTextColor); } } /** * 设置内容文字颜色 * @param color */ public void setContentTextColor(int color) { contentTextColor = color; } /** * 设置标题字体大小 * @param szie */ public void setTitleTextSize(float szie) { titleTextSize = szie; } /** * 设置内容字体大小 * @param szie */ public void setContentTextSize(float szie) { contentTextSize = szie; } /** * 设定哪列自动列宽 从0开始计算 * @param index */ public void setAutoColumnWidth(int index) { autoWidthIndex = index; for (int i = 0; i < titleLayout.getChildCount(); i++) { TextView tv = ((TextView) titleLayout.getChildAt(i)); if (i == autoWidthIndex){ tv.setLayoutParams(FILL_FILL_LAYOUTPARAMS); }else { tv.setLayoutParams(WAP_WAP_LAYOUTPARAMS); tv.setWidth(itemWidth[i]); } } } /**TextView画边框所用的paint*/ private static Paint BLACK_PAINT = new Paint(); private static Paint WHITE_PAINT = new Paint(); static { WHITE_PAINT.setColor(Color.WHITE); BLACK_PAINT.setColor(Color.BLACK); } /** * 重写的TextView,给TextView四周加上了边框 * @author Cdisk */ class CTextView extends TextView { @Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); // Top canvas.drawLine(0, 0, this.getWidth() - 1, 0, WHITE_PAINT); // Left canvas.drawLine(0, 0, 0, this.getHeight() - 1, WHITE_PAINT); // Right canvas.drawLine(this.getWidth() - 1, 0, this.getWidth() - 1, this.getHeight() - 1, BLACK_PAINT); // Buttom canvas.drawLine(0, this.getHeight() - 1, this.getWidth() - 1, this.getHeight() - 1, BLACK_PAINT); } public CTextView(Context context) { super(context); } } }
package com.example.dynamiclist; import java.util.ArrayList; import java.util.List; import android.app.Activity; import android.graphics.Color; import android.os.Bundle; import android.view.View; import android.widget.AdapterView; public class CsvDynamicToListActivity extends Activity { CListView listView; List<String[]> list = new ArrayList<String[]>(); @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); makeData(); String[] title = new String[] { "ID", "标题2", "标题3", "标题4", "标题5" }; listView = new CListView(this, title, list); listView.setTitleTextColor(Color.GREEN); listView.setTitleBackgroundColor(Color.RED); // listView.setAutoColumnWidth(3); // listView.setItemBackgroundColor(Color.GREEN, Color.WHITE); listView.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { String[] item = listView.getItem(position); item[2] = "12312312312"; listView.definedSetChanged(); } }); listView.definedSetChanged(); setContentView(listView); } private void makeData() { list.add(new String[] { "1", "数据1.2", "数据1.3", "数据1.4" }); list.add(new String[] { "2", "数据2.2", "数据2.3", "数据2.4", "数据2.5" }); list.add(new String[] { "10", "数据10.2", "数据10.3", "数据10.4", "数据10.5", "数据10.6", "数据10.7" }); } }