textview 使drawable与text一起居中的textview，这里仅支持drawableleft

package cc.hent.www.ramo_cmedcial.CustomView;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.drawable.Drawable;
import android.support.annotation.Nullable;
import android.util.AttributeSet;


/**
 * Created by he cs on 2018/1/2.
 * drawable与text一起居中的textview
 */

public class DrawableTextView extends android.support.v7.widget.AppCompatTextView {
    public DrawableTextView (Context context) {
        this(context,null);
    }

    public DrawableTextView (Context context, @Nullable AttributeSet attrs) {
        this(context, attrs,-1);
    }

    public DrawableTextView (Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    @Override
    protected void onDraw (Canvas canvas) {
      
        Drawable[] compoundDrawables = getCompoundDrawables();
        if (compoundDrawables != null) {
            Drawable left = compoundDrawables[0];
            if (left != null) {
                float textWidth = getPaint().measureText(getText().toString());
                int compoundDrawablePadding = getCompoundDrawablePadding();
                //获取drawable的宽度  Intrinsic 内在的
                int leftWidth = left.getIntrinsicWidth();

                float bodyWidth = textWidth+compoundDrawablePadding+leftWidth;

                canvas.translate((getWidth()-bodyWidth)/2,0);
            }
        }

//一定要，后调用

  super.onDraw(canvas);

} }

重点在于重写ondraw，其他属性同textview就可以，注意，在使用gravity的时候，center_vertical即可