我需要知道Oracle sql中隐式和显式数据类型转换之间的区别，任何人都可以帮助我
答案 0 :(得分：1)
这不是家庭作业的问题，现在是吗？
在任何情况下，＆＃34;明确＆＃34;类型转换是您在查询或源代码中明确要求的类型：update my table set float_field = 1。
＆＃34;隐含＆＃34;转换是暗示的转换。例如，如果您1，则从整数1.0到浮点1.0的转换是＆＃34;隐含的。 ＆＃34; （但是，将public class CoustomTextView extends TextView {
private float strokeWidth;
private Integer strokeColor;
private Paint.Join strokeJoin;
private float strokeMiter;
public CoustomTextView(Context context) {
super(context);
init(null);
}
public CoustomTextView(Context context, AttributeSet attrs) {
super(context, attrs);
init(attrs);
}
public CoustomTextView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init(attrs);
}
public void init(AttributeSet attrs) {
if (attrs != null) {
TypedArray a = getContext().obtainStyledAttributes(attrs, R.styleable.CoustomTextView);
if (a.hasValue(R.styleable.CoustomTextView_strokeColor)) {
float strokeWidth = a.getDimensionPixelSize(R.styleable.CoustomTextView_strokeWidth, 1);
int strokeColor = a.getColor(R.styleable.CoustomTextView_strokeColor, 0xff000000);
float strokeMiter = a.getDimensionPixelSize(R.styleable.CoustomTextView_strokeMiter, 10);
Paint.Join strokeJoin = null;
switch (a.getInt(R.styleable.CoustomTextView_strokeJoinStyle, 0)) {
case (0):
strokeJoin = Paint.Join.MITER;
break;
case (1):
strokeJoin = Paint.Join.BEVEL;
break;
case (2):
strokeJoin = Paint.Join.ROUND;
break;
}
this.setStroke(strokeWidth, strokeColor, strokeJoin, strokeMiter);
}
}
}
public void setStroke(float width, int color, Paint.Join join, float miter) {
strokeWidth = width;
strokeColor = color;
strokeJoin = join;
strokeMiter = miter;
}
@Override
public void onDraw(Canvas canvas) {
super.onDraw(canvas);
int restoreColor = this.getCurrentTextColor();
if (strokeColor != null) {
TextPaint paint = this.getPaint();
paint.setStyle(Paint.Style.STROKE);
paint.setStrokeJoin(strokeJoin);
paint.setStrokeMiter(strokeMiter);
this.setTextColor(strokeColor);
paint.setStrokeWidth(strokeWidth);
super.onDraw(canvas);
paint.setStyle(Paint.Style.FILL);
this.setTextColor(restoreColor);
}
}
}
分配给整数字段应该是一个错误。）