三级联动
原来的样式好难看，发现没有设置样式的地方，只有更改源码一途了
Drawable资源
- wheel_bg.xml 将面的内容注释
这个用来设置背景色的
-
-
- wheel_val.xml
控件中间选择中部分
WheelView类更改阴影色
/**
* Top and bottom shadows colors
*/
// private static final int[] SHADOWS_COLORS = new int[]{0xeeFF0000, 0xee00FF00, 0xee0000FF};
/**
* 更改阴影色
*/
private static final int[] SHADOWS_COLORS = new int[]{ 0xeeffffff, 0xeaffffff, 0x33ffffff };
这样就有渐变的效果了
这里写图片描述
中间选择部分加2条线
- 在drawCenterRect方法 中
private void drawCenterRect(Canvas canvas) {
int center = getHeight() / 2;
//条止的偏移量
int offset = (int) (getItemHeight() / 2 * 1.2);
centerDrawable.setBounds(0, center - offset, getWidth(), center + offset);
centerDrawable.draw(canvas);
/**
* 中间选中的画2条线
*
*/
//上方的线
canvas.drawLine(0,center-offset,getWidth(),center-offset,mPaint);
//下方的线
canvas.drawLine(0,center+offset,getWidth(),center+offset,mPaint);
}
前面要初始化画笔
/**
* 初始化画笔
*/
private void initPaint() {
mPaint = new Paint();
//锯齿
mPaint.setAntiAlias(true);
//画笔颜色
// mPaint.setColor(0xffebebeb);
//为了看出效果
mPaint.setColor(0xffEA2000);
//宽度
mPaint.setStrokeWidth(1f);
}
这里写图片描述
选择中字体变大，不选择时变小
字体更改要更改Adapter中的设置--AbstractWheelTextAdapter
- 设置属性
/**
* 当前的索引
*/
private int currentIndex = 0;
/**
* 最大字体
*/
private static int maxsize = 24;
/**
* 最小字体
*/
private static int minsize = 14;
- 更改构造方法
protected AbstractWheelTextAdapter(Context context) {
this(context, TEXT_VIEW_ITEM_RESOURCE);
}
/**
* Constructor
* @param context the current context
* @param itemResource the resource ID for a layout file containing a TextView to use when instantiating items views
*/
protected AbstractWheelTextAdapter(Context context, int itemResource) {
this(context, itemResource, NO_RESOURCE,0,maxsize,minsize);
}
/**
* Constructor
* @param context the current context
* @param itemResource the resource ID for a layout file containing a TextView to use when instantiating items views
* @param itemTextResource the resource ID for a text view in the item layout
*/
protected AbstractWheelTextAdapter(Context context, int itemResource, int itemTextResource,int currentIndex,int maxsize,int minsize) {
this.context = context;
itemResourceId = itemResource;
itemTextResourceId = itemTextResource;
/**
* 为属性赋值
*/
this.currentIndex=currentIndex;
this.maxsize = maxsize;
this.minsize = minsize;
inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
这样还是没有效果的
更改AbstractWheelTextAdapter 中
public View getItem(int index, View convertView, ViewGroup parent) {
方法:
@Override
public View getItem(int index, View convertView, ViewGroup parent) {
if (index >= 0 && index < getItemsCount()) {
if (convertView == null) {
convertView = getView(itemResourceId, parent);
}
TextView textView = getTextView(convertView, itemTextResourceId);
if (textView != null) {
CharSequence text = getItemText(index);
if (text == null) {
text = "";
}
textView.setText(text);
/**
* 设置字体设置
*
*/
if(index==currentIndex){
textView.setTextSize(maxsize);
}else {
textView.setTextSize(minsize);
}
if (itemResourceId == TEXT_VIEW_ITEM_RESOURCE) {
configureTextView(textView);
}
}
return convertView;
}
return null;
}
貌似只有第一个会变
这里写图片描述
- Adapter中把所有Item都存放起来
/**
* 存放Item容器
*/
private ArrayList arrayList = new ArrayList();
/**
* getter 方法对外使用
* @return
*/
public ArrayList getTextViews() {
return arrayList;
}
- 在getItem方法中添加
@Override
public View getItem(int index, View convertView, ViewGroup parent) {
if (index >= 0 && index < getItemsCount()) {
if (convertView == null) {
convertView = getView(itemResourceId, parent);
}
TextView textView = getTextView(convertView, itemTextResourceId);
/**
* 添加到容器中
*/
if (!arrayList.contains(textView)) {
arrayList.add(textView);
}
if (textView != null) {
CharSequence text = getItemText(index);
if (text == null) {
text = "";
}
textView.setText(text);
/**
* 设置字体设置
*
*/
if(index==currentIndex){
textView.setTextSize(maxsize);
}else {
textView.setTextSize(minsize);
}
if (itemResourceId == TEXT_VIEW_ITEM_RESOURCE) {
configureTextView(textView);
}
}
return convertView;
}
return null;
}
这样貌似还是不行
- 对控件添加监听并设置字体
private void initListener() {
/**
* 滚动中改变
*/
mWheelView.addChangingListener(new OnWheelChangedListener() {
@Override
public void onChanged(WheelView wheel, int oldValue, int newValue) {
//获取当前的索引
int currentItem = wheel.getCurrentItem();
/**
* 获取内容
*/
String text = (String) mBirthYearAdapter.getItemText(currentItem);
/**
* 设置字体
*
*/
setItemTextSize(text,mBirthYearAdapter);
// Toast.makeText(MainActivity.this, text, Toast.LENGTH_SHORT).show();
}
});
/**
* 滚动完成改变
*/
mWheelView.addScrollingListener(new OnWheelScrollListener() {
@Override
public void onScrollingStarted(WheelView wheel) {
}
@Override
public void onScrollingFinished(WheelView wheel) {
//获取当前的索引
int currentItem = wheel.getCurrentItem();
/**
* 获取内容
*/
String text = (String) mBirthYearAdapter.getItemText(currentItem);
/**
* 设置字体
*
*/
setItemTextSize(text,mBirthYearAdapter);
Toast.makeText(MainActivity.this, text, Toast.LENGTH_SHORT).show();
}
});
- 设置字体大小方法
/**
* 设置字体大小
* @param currentItemText
* @param birthYearAdapter
*/
private void setItemTextSize(String currentItemText,BirthYearAdapter birthYearAdapter){
//获取所有的View
ArrayList arrayLists = birthYearAdapter.getTextViews();
int size = arrayLists.size();
//当前条目的内容
String currentText;
for(int i = 0; i < size; i++) {
TextView textview = (TextView) arrayLists.get(i);
currentText = textview.getText().toString().trim();
if (currentItemText.equals(currentText)) {
textview.setTextSize(maxsize);
} else {
textview.setTextSize(minsize);
}
}
}
效果
这里写图片描述
三级联动一样一做法
这里写图片描述
源码:
https://github.com/ln0491/WheelDemo2