我想显示一行数字,每行都打印在不同圆圈的中心。但是,集合的大小由用户输入决定。我所取得的成就是:
RelativeLayout myLayout = (RelativeLayout)findViewById(R.id.layout1);
// Creating a new TextView
TextView[] tv = new TextView[size+1];
TextView temptv;
for (i = 1; i <= size; i++) {
temptv = new TextView(MainActivity.this);
RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
if (i > 1) {
lp.addRule(RelativeLayout.BELOW, R.id.textView5);
lp.addRule(RelativeLayout.RIGHT_OF, tv[i-1].getId());
}
else {
lp.addRule(RelativeLayout.BELOW, R.id.textView5);
lp.addRule(RelativeLayout.ALIGN_LEFT, R.id.textView5);
}
// width of Text
temptv.setWidth(60);
temptv.setHeight(60);
// size of Text
temptv.setTextSize(TypedValue.COMPLEX_UNIT_SP, 25);
temptv.setGravity(Gravity.CENTER|Gravity.CENTER_VERTICAL);
temptv.setLayoutParams(lp);
myLayout.addView(temptv, lp);
answer = "<font color='#000000'>" + mynum[i] + "</font>";
// Update the label with our dynamic answer
temptv.setText(Html.fromHtml(answer));
temptv.setBackgroundResource(R.drawable.circle1);
tv[i] = temptv;
tv[i].setId(i);
}
它工作正常,但有一个问题。圆的半径始终是TextView的宽度或高度的一半。所以在上面的例子中,半径总是30,就像这张图片一样:
如果TextView的宽度和高度不同(例如使用temptv.setWidth(75);
和temptv.setHeight(50);
),那么我会得到椭圆形,如下图所示:pic2 http://i841.photobucket.com/albums/zz337/lilpengi/number2_zps767ec27f.png
无论我的circle1.xml中的形状设置如何:
<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="oval">
<corners android:radius="25dip"/>
<stroke android:color="#c00000" android:width="5dip"/>
<solid android:color="#ffffff"/>
</shape>
无论我在半径10,25,50处设置什么,结果都是一样的。我的代码出了什么问题?
答案 0 :(得分:2)
使用标准的Android小部件似乎是不可能的,因为你在组件周围画了一个“椭圆形”。
椭圆可以变成圆形,因为圆是高度等于宽度的专业化。我的建议是重新实现计算组件大小的方式。只需通过覆盖onMeasure来布局布局(这是更简单的方法,请点击底部的链接):
class SquareTextView extends TextView{
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
int size = 0;
int width = getMeasuredWidth();
int height = getMeasuredHeight();
if (width > height) {
size = height;
} else {
size = width;
}
setMeasuredDimension(size, size);
}
}