如何使用Java代码在TextView中垂直居中文本？-HowtocentertextverticallyinaTextViewwithJavacode?

1  

use this class for VerticalTextView.

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();
}
}

1  

you can do it like this

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);

where R.layout.my_layout_file contains textview with gravity center. and here you can get object of textview like this

其中R.layout.my_layout_file包含带有重心的textview。在这里你可以得到像这样的textview对象

textviewObject = (TextView)view.findViewById(R.id.textViewId) 

1  

Try setting RelativeLayout.LayoutParams to you RelativeLayout

尝试将RelativeLayout.LayoutParams设置为RelativeLayout

RelativeLayout.LayoutParams relativeLayoutParams = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.MATCH_PARENT);
container.setLayoutParams(relativeLayoutParams)

Then set the gravity for your TextView:

然后设置TextView的重力:

tv.setGravity(Gravity.CENTER);

Then add the view to your RelativeLayout:

然后将视图添加到RelativeLayout:

container.addView(tv);