最近在做一个ERP的项目，产品要求做一个类似京东，淘宝，伙伴云表格的筛选控件，如下图所示：
S70301-160019.jpg
1.思路
这个页面其实一个主页面的Activity，右滑弹出一个抽屉DrawerLayout，抽屉其实是一个fragment，我们主要的布局就在fragment里面。而这个筛选控件其中的一个其实是下拉菜单。当然原生的spinner太丑而且不符合要求，所以我用一个LinearLayout包含一个TextView（drawableRight下拉图标），加一个listview来构造。
2.行动代码
思路有了，接下来就是代码行动了，首先我们封装这个控件。
public class MySpinnerView extends LinearLayout implements MySpinnerAdapter.RadioButtonClick {
//用于下拉图标的动画
private static final int MAX_LEVEL = 10000;
//用于状态保存
private static final String INSTANCE_STATE = "instance_state";
private static final String SELECTED_INDEX = "selected_index";
private static final String IS_POPUP_SHOWING = "is_popup_showing";
private int selectedIndex;//选中的位置
private Drawable drawable;//下拉图标
private ListView listView;
private MySpinnerAdapter adapter;//用于listview的adapter
private AdapterView.OnItemClickListener onItemClickListener;
private AdapterView.OnItemSelectedListener onItemSelectedListener;
private boolean isArrowHide, isShowing;//是否显示
private int textColor;
private int backgroundSelector;//选中颜色
private int datasId;
private TextView titleView;//title
private String titleText;
private int defaultPadding;//默认padding
private List mFilterDataItems;//筛选的数据源
private String startDate, endDate;
private int lastPos = -1;//保存最近一次选中的位置
public MySpinnerView(Context context) {
super(context);
getAttrs(context, null);
init(context, null);
}
public MySpinnerView(Context context, AttributeSet attrs) {
super(context, attrs);
getAttrs(context, attrs);
init(context, attrs);
}
public MySpinnerView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
getAttrs(context, attrs);
init(context, attrs);
}
@Override
public Parcelable onSaveInstanceState() {
Bundle bundle = new Bundle();
bundle.putParcelable(INSTANCE_STATE, super.onSaveInstanceState());
bundle.putInt(SELECTED_INDEX, selectedIndex);
bundle.putBoolean(IS_POPUP_SHOWING, isShowing);
dismissDropDown();
return bundle;
}
@Override
public void onRestoreInstanceState(Parcelable savedState) {
if (savedState instanceof Bundle) {
Bundle bundle = (Bundle) savedState;
selectedIndex = bundle.getInt(SELECTED_INDEX);
if (adapter != null) {
setTitle(selectedIndex);
// adapter.notifyItemSelected(selectedIndex);
}
if (bundle.getBoolean(IS_POPUP_SHOWING)) {
if (isShowing) {
post(new Runnable() {
@Override
public void run() {
showDropDown();
}
});
}
}
savedState = bundle.getParcelable(INSTANCE_STATE);
}
super.onRestoreInstanceState(savedState);
}
/**
* 获取相关属性attr
*
* @param context
* @param attrs
*/
private void getAttrs(Context context, AttributeSet attrs) {
// TODO Auto-generated constructor stub
// 通过这个方法，将你在attrs.xml中定义的declare=styleable
// 的所有属性的值存储到TypedArray中
TypedArray ta = context.obtainStyledAttributes(attrs,
R.styleable.MySpinnerView);
// 从TypedArray中取出对应的值来为要设置的属性赋值
titleText = ta.getString(R.styleable.MySpinnerView_msv_title);
datasId = ta.getResourceId(R.styleable.MySpinnerView_msv_array, 0);
defaultPadding = getResources().getDimensionPixelSize(R.dimen.one_and_a_half_grid_unit);
setGravity(Gravity.CENTER_VERTICAL | Gravity.LEFT);
// setPadding(getResources().getDimensionPixelSize(R.dimen.three_grid_unit), defaultPadding, defaultPadding,
// defaultPadding);
setClickable(true);
backgroundSelector = ta.getResourceId(R.styleable.MySpinnerView_msv_backgroundSelector,
R.drawable.spinner_selector);
textColor = ta.getColor(R.styleable.MySpinnerView_msv_textTint, -1);
isShowing = ta.getBoolean(R.styleable.MySpinnerView_msv_isShow, false);
isArrowHide = ta.getBoolean(R.styleable.MySpinnerView_msv_hideArrow, false);
if (!isArrowHide) {
//不隐藏则显示图标
Drawable basicDrawable = ContextCompat.getDrawable(context, R.drawable.spinner_arrow);
int resId = ta.getColor(R.styleable.MySpinnerView_msv_arrowTint, -1);
if (basicDrawable != null) {
drawable = DrawableCompat.wrap(basicDrawable);
if (resId != -1) {
DrawableCompat.setTint(drawable, resId);
}
}
}
ta.recycle();
}
private void init(final Context context, AttributeSet attrs) {
setOrientation(VERTICAL);
titleView = new TextView(context);
titleView.setText(titleText);
titleView.setPadding(defaultPadding, defaultPadding, defaultPadding, defaultPadding);
if (!isArrowHide) {
titleView.setCompoundDrawablesWithIntrinsicBounds(null, null, drawable, null);
}
listView = new ListViewInSrcollView(context);
listView.setId(getId());
listView.setDivider(null);
listView.setItemsCanFocus(true);
//隐藏scrollbars
listView.setVerticalScrollBarEnabled(false);
listView.setHorizontalScrollBarEnabled(false);
listView.setBackgroundResource(backgroundSelector);
//数据源，这里测试用的是assets中的json，开发者可自行构造bean和数据源
if (datasId != 0) {
final String[] temp = getResources().getStringArray(datasId);
mFilterDataItems = new ArrayList<>();
for (String aTemp : temp) {
mFilterDataItems.add(new FilterDataItem(0, aTemp, false));
}
adapter = new MySpinnerAdapter(mFilterDataItems, this);
setAdapterInternal(adapter);
}
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView parent, View view, int position, long id) {
spinnerClick(position);
}
});
addView(titleView);
addView(listView);
if (isShowing) {
listView.setVisibility(View.VISIBLE);
} else {
listView.setVisibility(View.GONE);
}
}
/**
* 获取当前选中的位置
*
* @return
*/
public int getSelectedIndex() {
return selectedIndex;
}
/**
* 设置当前选中位置
*
* @param position 位置
*/
public void setSelectedIndex(int position) {
if (adapter != null) {
if (position >= 0 && position <= adapter.getCount()) {
//adapter.notifyItemSelected(position);
selectedIndex = position;
setTitle(position);
} else {
throw new IllegalArgumentException("Position must be lower than adapter count!");
}
}
}
public void addOnItemClickListener(@NonNull AdapterView.OnItemClickListener onItemClickListener) {
this.onItemClickListener = onItemClickListener;
}
public void setOnItemSelectedListener(@NonNull AdapterView.OnItemSelectedListener onItemSelectedListener) {
this.onItemSelectedListener = onItemSelectedListener;
}
/**
* 设置adapter
*
* @param adapter
*/
private void setAdapterInternal(MySpinnerAdapter adapter) {
// If the adapter needs to be settled again, ensure to reset the selected index as well
//selectedIndex = 0;
listView.setAdapter(adapter);
//setTitle(selectedIndex);
}
/**
* 设置adapter
*
* @param filterDataItems 数据源
*/
public void setAdapter(List filterDataItems) {
this.mFilterDataItems = filterDataItems;
this.adapter = new MySpinnerAdapter(filterDataItems, this);
setAdapterInternal(adapter);
}
@Override
public boolean onTouchEvent(@NonNull MotionEvent event) {
if (event.getAction() == MotionEvent.ACTION_UP) {
if (!isShowing) {
showDropDown();
} else {
dismissDropDown();
}
}
return super.onTouchEvent(event);
}
/**
* 点击动画效果
*
* @param shouldRotateUp
*/
private void animateArrow(boolean shouldRotateUp) {
int start = shouldRotateUp ? 0 : MAX_LEVEL;
int end = shouldRotateUp ? MAX_LEVEL : 0;
ObjectAnimator animator = ObjectAnimator.ofInt(drawable, "level", start, end);
animator.setInterpolator(new LinearOutSlowInInterpolator());
animator.start();
}
/**
* 隐藏
*/
public void dismissDropDown() {
if (!isArrowHide) {
animateArrow(false);
}
listView.setVisibility(View.GONE);
isShowing = false;
}
/**
* 展开
*/
public void showDropDown() {
if (!isArrowHide) {
animateArrow(true);
}
listView.setVisibility(View.VISIBLE);
isShowing = true;
}
public void setTintColor(@ColorRes int resId) {
if (drawable != null && !isArrowHide) {
DrawableCompat.setTint(drawable, ContextCompat.getColor(getContext(), resId));
}
}
public void setTitle(int position) {
String text = null;
lastPos = position;
if (adapter.getItem(position) instanceof String) {
text = titleText + " " +
"(" + adapter.getItem(position).toString() + ")" + "";
}
if (adapter.getItem(position) instanceof FilterDataItem) {
FilterDataItem bean = (FilterDataItem) adapter.getItem(position);
text = titleText + " " +
"(" + bean.getName() + ")" + "";
}
titleView.setText(Html.fromHtml(text));
}
/**
* 获取选中的数据源
*
* @return
*/
public FilterDataItem getSelectedData() {
if (selectedIndex >= 8) {
FilterDataItem item = new FilterDataItem();
item.setName(startDate + "|" + endDate);
item.setId(-5);
if (TextUtils.isEmpty(startDate)
|| TextUtils.isEmpty(endDate)) {
item.setChecked(false);
} else {
item.setChecked(true);
}
return item;
} else {
return mFilterDataItems.get(selectedIndex);
}
}
@Override
public void click(int position) {
spinnerClick(position);
}
/**
* 点击方法
*
* @param position
*/
private void spinnerClick(int position) {
final FilterDataItem bean = mFilterDataItems.get(position);
System.out.println("点击的位置" + position);
if (!bean.isChecked()) {
//更改点击状态
bean.setChecked(true);
//把最近的已经设为true的变为false
if (lastPos != -1) {
FilterDataItem item = mFilterDataItems.get(lastPos);
item.setChecked(false);
}
}
selectedIndex = position;
final int tempPos = position;
if (bean.getName().contains("时间")) {
Calendar c = Calendar.getInstance();
// 直接创建一个DatePickerDialog对话框实例，并将它显示出来
new DatePickerDialog(getContext(),
// 绑定监听器
new DatePickerDialog.OnDateSetListener() {
@Override
public void onDateSet(DatePicker view, int year,
int monthOfYear, int dayOfMonth) {
if (bean.getName().contains("开始时间")) {
startDate = year + "." + (monthOfYear + 1)
+ "." + dayOfMonth;
bean.setName("开始时间 " + startDate);
} else {
endDate = year + "." + (monthOfYear + 1)
+ "." + dayOfMonth;
bean.setName("结束时间 " + endDate);
}
adapter.notifyDataSetChanged();
setTitle(tempPos);
}
}
// 设置初始日期
, c.get(Calendar.YEAR), c.get(Calendar.MONTH), c
.get(Calendar.DAY_OF_MONTH)).show();
} else {
postDelayed(new Runnable() {
@Override
public void run() {
dismissDropDown();
}
}, 500);
adapter.notifyDataSetChanged();
setTitle(position);
}
}
然后就是在fragment的布局文件中引入它fragment_filter.xml
最后上activity的布局文件，就是一个drawerlayout
上效果图
123.jpg