为UIView添加下上左右滑动操作...- 除开或替换listview 默认的点...- listView 怎么保持选中项高亮

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▪为UIView添加下上左右滑动操作为UIView添加上下左右滑动操作方法一：在viewDidLoad时为UIView添加操作 UISwipeGestureRecognizer *recognizer; recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipeFrom:)]; [recognizer set.........

▪ 除开或替换listview 默认的点击选中时的颜色去除或替换listview 默认的点击选中时的颜色 1.去除默认的点击选中时的颜色 (1)设置列表layout的backgroudcolor属性就OK了。 (2)android:focusable="false" android:focusableInTouchMode="false" android:cacheColorHint=.........

▪ listView 怎么保持选中项高亮 listView 如何保持选中项高亮 1.首先定义一个boolean[] listItemState用来保存列表项选中的状态！ 2.在onItemClick中 public void onItemClick(AdapterView<?> parent, View view, int position, long id) { System.ou.........

[1]为UIView添加下上左右滑动操作

来源: 互联网发布时间: 2014-02-18

为UIView添加上下左右滑动操作

方法一：
在viewDidLoad时为UIView添加操作

	UISwipeGestureRecognizer *recognizer;
	recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipeFrom:)];
	[recognizer setDirection:(UISwipeGestureRecognizerDirectionRight)];
	[[self view] addGestureRecognizer:recognizer];
	[recognizer release];
	
	recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipeFrom:)];
	[recognizer setDirection:(UISwipeGestureRecognizerDirectionLeft)];
	[[self view] addGestureRecognizer:recognizer];
	[recognizer release];
	
	recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipeFrom:)];
	[recognizer setDirection:(UISwipeGestureRecognizerDirectionUp)];
	[[self view] addGestureRecognizer:recognizer];
	[recognizer release];
	
	recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipeFrom:)];
	[recognizer setDirection:(UISwipeGestureRecognizerDirectionDown)];
	[[self view] addGestureRecognizer:recognizer];
	[recognizer release];

响应操作绑定的事件

- (void)handleSwipeFrom:(UISwipeGestureRecognizer *)recognizer{
        //UISwipeGestureRecognizerDirectionLeft   UISwipeGestureRecognizerDirectionRight  UISwipeGestureRecognizerDirectionUp  UISwipeGestureRecognizerDirectionDown
	if (recognizer.direction==UISwipeGestureRecognizerDirectionLeft ) {
		NSLog(@"Left");	
	}
	
}

方法二：

#define HORIZ_SWIPE_DRAG_MIN 12
#define VERT_SWIPE_DRAG_MAX 4
CGPoint startTouchPosition;
NSString *dirString ;

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
	UITouch *touch = touches.anyObject;
	startTouchPosition = [touch locationInView:self.view];
}

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event    
{    
    UITouch *touch = touches.anyObject;    
    CGPoint currentTouchPosition = [touch locationInView:self.view];
    if (fabsf(startTouchPosition.x - currentTouchPosition.x) >=    
        HORIZ_SWIPE_DRAG_MIN &&    
        fabsf(startTouchPosition.y - currentTouchPosition.y) <=    
        VERT_SWIPE_DRAG_MAX)    
    {    
        // Horizontal Swipe   
        if (startTouchPosition.x < currentTouchPosition.x) {   
            NSLog(@"from left");   
			dirString = @"left";
        }   
        else{    
            NSLog(@"from right");   
			dirString = @"right";}
		}    
   else if (fabsf(startTouchPosition.y - currentTouchPosition.y) >=    
             HORIZ_SWIPE_DRAG_MIN &&    
             fabsf(startTouchPosition.x - currentTouchPosition.x) <=    
             VERT_SWIPE_DRAG_MAX)   
	{    
        // Vertical Swipe   
        if (startTouchPosition.y < currentTouchPosition.y) {   
			NSLog(@"from bottom");
			dirString = @"bottom";}
        else    {
			NSLog(@"from top");
			dirString = @"top";}
    } else    
    {   
		//dirString = @"";
	}   
} 

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{
	if (dirString == @"right") {
		NSLog(@"event right");
	}else if (dirString == @"left") {
		NSLog(@"event left");
	}
}

[2] 除开或替换listview 默认的点击选中时的颜色

来源: 互联网发布时间: 2014-02-18

去除或替换listview 默认的点击选中时的颜色

1.去除默认的点击选中时的颜色

(1)设置列表layout的backgroudcolor属性就OK了。

(2)android:focusable="false" android:focusableInTouchMode="false"

android:cacheColorHint="#00000000" android:listSelector="#00000000"

2.替换listview 默认的点击选中时的颜色

设置listivew的listSelector属性就可以了。

1 楼 jackie03 2011-10-11

简洁明了犀利

[3] listView 怎么保持选中项高亮

来源: 互联网发布时间: 2014-02-18

listView 如何保持选中项高亮

1.首先定义一个boolean[] listItemState用来保存列表项选中的状态！

2.在onItemClick中

public void onItemClick(AdapterView<?> parent, View view, int position,
    long id) {
   System.out.println("position:" + position + ",count:"
     + listAdapter.getCount());
   if (listItemState[position]) {
    listItemState[position] = false;
    view.setBackgroundResource(0);//不设置颜色
   } else {
    listItemState[position] = true;
    view.setBackgroundResource(R.drawable.betresult_list_focus);
   }

}

3.在重写的Adapter 的getView方法中，写入类似这样的语句。

if (listItemState[position]) {
     view.setSelected(true);
     view.setPressed(true);
     // view.setBackgroundColor(Color.BLUE);
     view.setBackgroundResource(R.drawable.betresult_list_focus);
    } else {
     view.setSelected(false);
     view.setPressed(false);
     // view.setBackgroundColor(Color.BLUE);
    }

如此，选中的列表项可以高亮显示！