改方案也需要先计算左边的最大占用宽度，来设置右边占用的大小，每一项的布局如下：

<?xml version="1.0" encoding="utf-8"?> <LinearLayout ===".activity.Typography1Activity"> <TextView =="@color/color_black_999999" android:textSize="@dimen/text_size_13"/> <TextView ==>

       每一行有两个TextView，左边宽度为自适应，右边占据剩下左右的位置，在计算出左边最大宽度后，重新设置左边每一个TextView占用的宽度。

方案6

       方式与1差不多，但是不在继承TextView，而是直接继承View:

{ private Paint leftPaint = new Paint(); private Paint rightPaint = new Paint(); private int fullWidth; private float textSize; private JSONArray array; private int middlePadding = 0; float maxLeftWidth = 0; int itemSize = 0; public TypographyView4(Context context) { super(context); init(); } public TypographyView4(Context context, AttributeSet attrs) { super(context, attrs); init(); } public TypographyView4(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); init(); } () { textSize = getResources().getDimensionPixelSize(R.dimen.text_size_13); leftPaint.setAntiAlias(true); leftPaint.setTextSize(textSize); leftPaint.setColor(getResources().getColor(R.color.color_black_999999)); rightPaint.setAntiAlias(true); rightPaint.setTextSize(textSize); rightPaint.setColor(getResources().getColor(R.color.color_black)); middlePadding = getResources().getDimensionPixelSize(R.dimen.padding_value); } (int w, int h, int oldw, int oldh) { super.onSizeChanged(w, h, oldw, oldh); fullWidth = getWidth();// 整个textView的宽度 } (JSONArray array) { this.array = array; if (array != null) { try { int size = itemSize = array.length(); for (int i = 0; i < size; ++i) { JSONArray o = (JSONArray) array.get(i); String key = o.getString(0); String value = o.getString(1); if (TextUtils.isEmpty(key) || TextUtils.isEmpty(value)) { itemSize--; continue; } float curWidth = leftPaint.measureText(key); if (curWidth > maxLeftWidth) { maxLeftWidth = curWidth; } } maxLeftWidth = maxLeftWidth + middlePadding; invalidate(); } catch (Exception e) { } } } (Canvas canvas) { if (array == null) { return; } int lineCount = 0; try { JSONArray item; float offsetY; for (int i = 0; i < itemSize; ++i) { item = (JSONArray) array.get(i); offsetY = (lineCount + 1) * textSize; canvas.drawText(item.getString(0), 0, offsetY, leftPaint); String value = item.getString(1); float valueWidth = rightPaint.measureText(value); if (valueWidth > fullWidth - maxLeftWidth) {// 一行显示不完 char[] textCharArray = value.toCharArray(); float charWidth; float drawWidth = maxLeftWidth; for (int j = 0; j < textCharArray.length; j++) { charWidth = rightPaint.measureText(textCharArray, j, 1); if (fullWidth - drawWidth < charWidth) { lineCount++; drawWidth = maxLeftWidth; offsetY += textSize; } canvas.drawText(textCharArray, j, 1, drawWidth, offsetY, rightPaint); drawWidth += charWidth; } } else { canvas.drawText(value, maxLeftWidth, offsetY, rightPaint); } lineCount += 2; } } catch (JSONException e) { e.printStackTrace(); } } }

       该方案主要继承自View，不再继承TextView，由于在在上述方案中不在调用super，因此TextView已经退化为一个View,因此直接继承View。

总结