android 中的可绘制文本与左对齐

I am new to custom view and didn't know much about canvas in android, I wanted to align a left drawable to right side of layout along with the text(whether multiline or not) of same textview as in this image

在上图中，我想将 $ 图像与文本对齐（$20.0 - $90.0 /小时），并且如果文本是多行并且我不想使用任何额外的布局，则必须位于中心。提前致谢

这是我的基本 xml，

 <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center"">

        <TextView
            android:id="@+id/ad_post_tv_noDays"
            style="@style/textView"
            android:text="20 days"
            android:layout_width="wrap_content"
            android:layout_alignParentLeft="true"
            android:drawablePadding="5dp"
            android:textColor="@color/color60"
            android:drawableLeft="@drawable/icon_calender"
            android:layout_gravity="left|center"
            android:gravity="left|center"
            android:layout_centerVertical="true"
            />

        <TextView
            style="@style/textView"
             android:layout_alignParentRight="true"
            android:id="@+id/ad_post_tv_wage"
            android:layout_marginLeft="5dp"
            android:text="$8 - $12/hour"
            android:textSize="10dp"
            android:layout_toRightOf="@id/ad_post_tv_noDays"
            android:drawablePadding="5dp"
            android:layout_width="wrap_content"
            android:textStyle="bold"
            android:layout_gravity="right|center"
            android:gravity="right|center"
            android:drawableLeft="@drawable/icon_dollar"
            />
    </RelativeLayout>

I had tried to implement it with custom views, it works for small text but when the text got bigger,it gets weird, my code image is as follows,

尝试这样的事情

package views;

import android.content.Context;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Rect;
import android.util.AttributeSet;
import android.widget.TextView;

import com.upsilon.docta.R;


public class MyTempView extends TextView {
    public MyTempView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }
public MyTempView(Context context) {
    super(context);
}

@Override
protected void onDraw(Canvas canvas) {
    //ContextCompat.getColor(mContext, R.color.back_text_color)
    Paint textPaint = getPaint();
    Rect bounds = new Rect();
    textPaint.getTextBounds(getText().toString(), 0, getText().length(), bounds);
    int textWidth = bounds.width();
    Resources res = getResources();
    Bitmap bitmap = BitmapFactory.decodeResource(res, R.drawable.ic_close);
    canvas.drawBitmap(bitmap, 0, getHeight() / 2 - bitmap.getHeight() / 2, textPaint);
    canvas.translate(bitmap.getWidth(), 0);
    super.onDraw(canvas);
}
}