如何使用Java代码在TextView中垂直居中文本?
我知道这个问题已经被问过很多次了。我已经读了其中的大部分,但它们对我不起作用,所以不要麻烦标记重复的内容 这是我的代码,也是我迄今为止所尝试的:如何使用Java代码在TextView中垂直居中文本?,java,android,textview,alignment,Java,Android,Textview,Alignment,我知道这个问题已经被问过很多次了。我已经读了其中的大部分,但它们对我不起作用,所以不要麻烦标记重复的内容 这是我的代码,也是我迄今为止所尝试的: RelativeLayout container = new RelativeLayout(this.getContext()); TextView tv = new TextView(this.getContext()); tv.setText(txt); // a single digit like '3' tv.setLines(1); tv.
RelativeLayout container = new RelativeLayout(this.getContext());
TextView tv = new TextView(this.getContext());
tv.setText(txt); // a single digit like '3'
tv.setLines(1);
tv.layout(0, offsety, cellszie, offsety+cellsize);
tv.setTextAlignment(TextView.TEXT_ALIGNMENT_CENTER);
tv.setGravity(Gravity.CENTER);
// I also tried CENTER_VERTIAL and the following line
// tv.setGravity(CENTER_VERTIAL| CENTER_HORIZONTAL);
// I also tried giving LayoutParams to tv like this:
// tv.setLayoutParams(new LayoutParams(cellsize, cellsize));
// tv.setLayoutParams(new LayoutParams(WRAP_CONTENT, WRAP_CONTENT));
// tv.setLayoutParams(new LayoutParams(MATCH_PARENT, MATCH_PARENT));
container.addView(tv);
该字符水平居中,但垂直浮动在TextView的顶部。设置gravity
和LayoutParams
不会改变其行为
如何使其垂直居中?将此类用于VerticalTextView
public class VerticalTextView extends TextView {
final boolean topDown;
public VerticalTextView(Context context, AttributeSet attrs){
super(context, attrs);
final int gravity = getGravity();
if(Gravity.isVertical(gravity) && (gravity&Gravity.VERTICAL_GRAVITY_MASK) == Gravity.BOTTOM) {
setGravity((gravity&Gravity.HORIZONTAL_GRAVITY_MASK) | Gravity.TOP);
topDown = false;
}else
topDown = true;
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec){
super.onMeasure(heightMeasureSpec, widthMeasureSpec);
setMeasuredDimension(getMeasuredHeight(), getMeasuredWidth());
}
@Override
protected void onDraw(Canvas canvas){
TextPaint textPaint = getPaint();
textPaint.setColor(getCurrentTextColor());
textPaint.drawableState = getDrawableState();
canvas.save();
if(topDown){
canvas.translate(getWidth(), 0);
canvas.rotate(90);
}else {
canvas.translate(0, getHeight());
canvas.rotate(-90);
}
canvas.translate(getCompoundPaddingLeft(), getExtendedPaddingTop());
getLayout().draw(canvas);
canvas.restore();
}
}
你可以这样做
RelativeLayout container = new RelativeLayout(this.getContext());
View view = layoutInflater.inflate(R.layout.my_layout_file, null);
container.addView(view);
textviewObject = (TextView)view.findViewById(R.id.textViewId)
其中R.layout.my_layout_文件包含带重心的文本视图。在这里,你可以像这样得到textview的对象
RelativeLayout container = new RelativeLayout(this.getContext());
View view = layoutInflater.inflate(R.layout.my_layout_file, null);
container.addView(view);
textviewObject = (TextView)view.findViewById(R.id.textViewId)
尝试为您的RelativeLayout设置RelativeLayout.LayoutParams
RelativeLayout.LayoutParams relativeLayoutParams = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.MATCH_PARENT);
container.setLayoutParams(relativeLayoutParams)
然后设置TextView的重力:
tv.setGravity(Gravity.CENTER);
然后将视图添加到您的RelativeLayout:
container.addView(tv);
您是否尝试将其宽度和高度设置为包裹内容?请尝试此设置布局参数并将高度设置为与父项匹配。。然后将中心垂直work@R.R.M我已经尝试了
wrap\u content
和match\u parent
。确定,然后尝试将relativeLayout的参数设置为match\u parent