Question

我在谷歌文档中读取了flags参数，但我无法找到它正在做什么。例如，在下面的代码中：

SpannableStringBuilder builder1 = new SpannableStringBuilder();
builder1.append("hi");
builder1.append("this is test");
builder1.setSpan(new ForegroundColorSpan(Color.RED), 0, 7, Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
myTextView.setText(builder1);

如果更改第4个参数并设置如下变量，则没有区别： Spanned.SPAN_INCLUSIVE_INCLUSIVE，Spanned.SPAN_INCLUSIVE_EXCLUSIVE，Spanned.SPAN_EXCLUSIVE_EXCLUSIVE，Spanned.SPAN_EXCLUSIVE_EXCLUSIVE。

结果没有区别。

但是在运行此代码时：

SpannableStringBuilder builder1 = new SpannableStringBuilder();
builder1.append("hi");
builder1.append("this is test");
builder1.setSpan(new ForegroundColorSpan(Color.RED), 0, 7, Spanned.SPAN_INCLUSIVE_EXCLUSIVE);

SpannableStringBuilder builder2 = new SpannableStringBuilder();
builder1.append("second test this is going to be different");
builder1.setSpan(new BackgroundColorSpan(Color.BLUE), 10, 15, Spanned.SPAN_INCLUSIVE_EXCLUSIVE);

SpannableStringBuilder all = new SpannableStringBuilder();
all.append(builder2);
all.insert(0, "\n");
all.insert(0, builder1);

根据传递给builder1.setSpan

的第4个参数，您会得到不同的结果

有人可以解释为什么会这样吗？

Answer 1

该标志设置在用于在输入法的撰写文本上应用临时样式信息的跨度上，以便在替换撰写文本时可以找到和删除它们

构建SpannableStringBuilder的标志变量是什么

1 个答案: