textView和textField

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在viewDidLoad中实现下面的方法

//实现光标的在最上面显示

[textView addObserver:selfforKeyPath:@"contentSize"options:NSKeyValueObservingOptionNewcontext:nil];

在viewDidLoad外面实现下面的方法

- (void) observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context

{

UITextView *textView = object;

textView.contentOffset = (CGPoint){.x =0,.y = 0};

}

textField

//该方法放在外面调用

-(void)setPadding:(BOOL)enable top:(float)top right:(float)right bottom:(float)bottom left:(float)left

{

isEnablePadding = enable;

paddingTop = top;

paddingRight = right;

paddingBottom = bottom;

paddingLeft = left;

}

//设置光标位置

- (CGRect)textRectForBounds:(CGRect)bounds {

if (isEnablePadding) {

return CGRectMake(bounds.origin.x +paddingLeft,

bounds.origin.y +paddingTop,

bounds.size.width -paddingRight, bounds.size.height -paddingBottom);

}

else{

return CGRectMake(bounds.origin.x, bounds.origin.y, bounds.size.width, bounds.size.height);

}

#pragma mark //控制placeHolder的颜色、字体

- (void)drawPlaceholderInRect:(CGRect)rect{

[LOGINANDREGISTER_COLORsetFill];

[[selfplaceholder]drawInRect:rect withFont:[UIFont systemFontOfSize:NAVIGATION_TITLE_TEXTSIZE]];

}

//控制placeHolder的位置，左右缩20

-(CGRect)placeholderRectForBounds:(CGRect)bounds

{

//return CGRectInset(bounds, 20, 0);

CGRect inset ;

inset = CGRectMake(15,30, 200, bounds.size.height);

if (IOS_DEVICE>=7) {

inset = CGRectMake(13,35, 200, bounds.size.height);//”13“光标位置

}

return inset;

}

//重写 UITextField右边“X”图标的位置

- (CGRect)clearButtonRectForBounds:(CGRect)bounds{

CGRect inset ;

inset = CGRectMake(self.frame.size.width-20,33, 15, 15);

if (IOS_DEVICE>=7) {

inset = CGRectMake(self.frame.size.width-20,31, 15, 15);

}

return inset;

}

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