Android自定义表格控件满足人们对视觉的需求

public class TableView extends ViewGroup{
private static final int STARTX = 0;// 起始X坐标
private static final int STARTY = 0;// 起始Y坐标
private static final int BORDER = 2;// 表格边框宽度
private int mRow;// 行数
private int mCol;// 列数
public TableView(Context context, AttributeSet attrs) {
super(context, attrs);
this.mRow = 3;// 默认行数为3
this.mCol = 3;// 默认列数为3
// 添加子控件
this.addOtherView(context);
}
public TableView(Context context, int row,int col) {
super(context);
if(row>20 || col>20){
this.mRow = 20;// 大于20行时，设置行数为20行
this.mCol = 20;// 大于20列时，设置列数为20列
}else if(row==0 || col==0){
this.mRow = 3;
this.mCol = 3;
}
else{
this.mRow = row;
this.mCol = col;
}
// 添加子控件
this.addOtherView(context);
}
public void addOtherView(Context context){
int value = 1;
for(int i=1;i<=mRow;i++){
for(int j=1;j<=mCol;j++){
TextView view = new TextView(context);
view.setText(String.valueOf(value++));
view.setTextColor(Color.rgb(79, 129, 189));
view.setGravity(Gravity.CENTER);
if(i%2==0){
view.setBackgroundColor(Color.rgb(219, 238, 243));
}else{
view.setBackgroundColor(Color.rgb(235, 241, 221));
}
this.addView(view);
}
}
}
@Override
protected void dispatchDraw(Canvas canvas) {
Paint paint = new Paint();
paint.setStrokeWidth(BORDER);
paint.setColor(Color.rgb(79, 129, 189));
paint.setStyle(Style.STROKE);
// 绘制外部边框
canvas.drawRect(STARTX, STARTY, getWidth()-STARTX, getHeight()-STARTY, paint);
// 画列分割线
for(int i=1;icanvas.drawLine((getWidth()/mCol)*i, STARTY, (getWidth()/mCol)*i, getHeight()-STARTY, paint);
}
// 画行分割线
for(int j=1;jcanvas.drawLine(STARTX, (getHeight()/mRow)*j, getWidth()-STARTX, (getHeight()/mRow)*j, paint);
}
super.dispatchDraw(canvas);
}
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
int x = STARTX+BORDER;
int y = STARTY+BORDER;
int i = 0;
int count = getChildCount();
for(int j=0; jView child = getChildAt(j);
child.layout(x, y, x+getWidth()/mCol-BORDER*2, y+getHeight()/mRow-BORDER*2);
if(i >=(mCol-1)){
i = 0;
x = STARTX+BORDER;
y += getHeight()/mRow;
}else{
i++;
x += getWidth()/mCol;
}
}
}
public void setRow(int row){
this.mRow = row;
}
public void setCol(int col){
this.mCol = col;
}
}

public class MainActivity extends Activity implements OnClickListener{
private Button btn;
private EditText row;
private EditText col;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
btn = (Button)findViewById(R.id.button1);
row = (EditText)findViewById(R.id.editRow);
col = (EditText)findViewById(R.id.editCol);
row.setError("请输入小于20的整数");
col.setError("请输入小于20的整数");
btn.setOnClickListener(this);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public void onClick(View v) {
Intent intent = new Intent();
Bundle bun = new Bundle();
if("".equals(row.getText().toString())){
Toast.makeText(this, "行数不能为空", Toast.LENGTH_SHORT).show();
return;
}else if("".equals(col.getText().toString())){
Toast.makeText(this, "列数不能为空", Toast.LENGTH_SHORT).show();
return;
}else{
int rowNum = Integer.parseInt(row.getText().toString());
int colNum = Integer.parseInt(col.getText().toString());
bun.putInt("row", rowNum);
bun.putInt("col", colNum);
intent.setClass(MainActivity.this, TableActivity.class);
intent.putExtras(bun);
startActivity(intent);
}
}
}

public class TableActivity extends Activity{
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Intent intent = this.getIntent();
Bundle bun = intent.getExtras();
int row = bun.getInt("row");
int col = bun.getInt("col");
TableView table = new TableView(this, row, col);
setContentView(table);
}
}