Android开发之TextView排版问题
下面直接是关于解决该问题的代码（根据别人的代码进行了修正以及测试，保证可以修改字体尺寸、颜色、根据padding调整，如果需要支持其他的格式可以将对应的属性添加至Paint类型的对象中）：
1 public class NsTextView extends TextView {
2 private String text;
3 private float textSize;
4 private float paddingLeft;
5 private float paddingRight;
6 private int textColor;
7 private Paint paint1 = new Paint();
8 private float textShowWidth;
9
10 public NsTextView(Context context, AttributeSet attrs) {
11 super(context, attrs);
12 text = this.getText().toString();
13 textSize = this.getTextSize();
14 textColor = this.getTextColors().getDefaultColor();
15 paddingLeft = this.getPaddingLeft();
16 paddingRight = this.getPaddingRight();
17 paint1.setTextSize(textSize);
18 paint1.setColor(textColor);
19 paint1.setAntiAlias(true);
20 }
21
22 @Override
23 protected void onDraw(Canvas canvas) {
24 textShowWidth = this.getMeasuredWidth() - paddingLeft - paddingRight;
25 int lineCount = 0;
26 text = this.getText().toString();
27 if (text == null)
28 return;
29 char[] textCharArray = text.toCharArray();
30 float drawedWidth = 0;
31 float charWidth;
32 for (int i = 0; i < textCharArray.length; i++) {
33 charWidth = paint1.measureText(textCharArray, i, 1);
34 if (textCharArray[i] == '
') {
35 lineCount++;
36 drawedWidth = 0;
37 continue;
38 }
39 if (textShowWidth - drawedWidth < charWidth) {
40 lineCount++;
41 drawedWidth = 0;
42 }
43 canvas.drawText(textCharArray, i, 1, paddingLeft + drawedWidth,
44 (lineCount + 1) * textSize, paint1);
45 drawedWidth += charWidth;
46 }
47 setHeight((int) ((lineCount + 1) * (int) textSize ));
48 }
49 }