添加工具类
import android.content.Context;
import android.content.res.ColorStateList;
import android.content.res.TypedArray;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.os.Parcelable;
import android.util.AttributeSet;
import android.util.TypedValue;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import java.util.ArrayList;
import java.util.List;
/**
* 标签列表
*/
public class LabelList extends ViewGroup implements View.OnClickListener {
private Context mContext;
private ColorStateList mTextColor;
private float mTextSize;
private Drawable mLabelBg;
private int mTextPaddingLeft;
private int mTextPaddingTop;
private int mTextPaddingRight;
private int mTextPaddingBottom;
private int mWordMargin;
private int mLineMargin;
private SelectType mSelectType;
private int mMaxSelect;
private int mMaxLines;
//用于保存label数据的key
private static final int KEY_DATA = R.id.tag_key_data;
//用于保存label位置的key
private static final int KEY_POSITION = R.id.tag_key_position;
private ArrayList<Object> mLabels = new ArrayList<>();
//保存选中的label的位置
private ArrayList<Integer> mSelectLabels = new ArrayList<>();
//保存必选项。在多选模式下，可以设置必选项，必选项默认选中，不能反选
private ArrayList<Integer> mCompulsorys = new ArrayList<>();
private OnLabelClickListener mLabelClickListener;
private OnLabelSelectChangeListener mLabelSelectChangeListener;
/**
* Label的选择类型
*/
public enum SelectType {
//不可选中，也不响应选中事件回调。（默认）
NONE(1),
//单选,可以反选。
SINGLE(2),
//单选,不可以反选。这种模式下，至少有一个是选中的，默认是第一个
SINGLE_IRREVOCABLY(3),
//多选
MULTI(4);
int value;
SelectType(int value) {
this.value = value;
}
static SelectType get(int value) {
switch (value) {
case 1:
return NONE;
case 2:
return SINGLE;
case 3:
return SINGLE_IRREVOCABLY;
case 4:
return MULTI;
}
return NONE;
}
}
public LabelList(Context context) {
super(context);
mContext = context;
}
public LabelList(Context context, AttributeSet attrs) {
super(context, attrs);
mContext = context;
getAttrs(context, attrs);
}
public LabelList(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
mContext = context;
getAttrs(context, attrs);
}
private void getAttrs(Context context, AttributeSet attrs) {
if (attrs != null) {
TypedArray mTypedArray = context.obtainStyledAttributes(attrs, R.styleable.labels_view);
int type = mTypedArray.getInt(R.styleable.labels_view_selectType, 1);
mSelectType = SelectType.get(type);
mMaxSelect = mTypedArray.getInteger(R.styleable.labels_view_maxSelect, 0);
mMaxLines = mTypedArray.getInteger(R.styleable.labels_view_maxLines, 0);
mTextColor = mTypedArray.getColorStateList(R.styleable.labels_view_labelTextColor);
mTextSize = mTypedArray.getDimension(R.styleable.labels_view_labelTextSize,
sp2px(context, 14));
mTextPaddingLeft = mTypedArray.getDimensionPixelOffset(
R.styleable.labels_view_labelTextPaddingLeft, 0);
mTextPaddingTop = mTypedArray.getDimensionPixelOffset(
R.styleable.labels_view_labelTextPaddingTop, 0);
mTextPaddingRight = mTypedArray.getDimensionPixelOffset(
R.styleable.labels_view_labelTextPaddingRight, 0);
mTextPaddingBottom = mTypedArray.getDimensionPixelOffset(
R.styleable.labels_view_labelTextPaddingBottom, 0);
mLineMargin = mTypedArray.getDimensionPixelOffset(R.styleable.labels_view_lineMargin, 0);
mWordMargin = mTypedArray.getDimensionPixelOffset(R.styleable.labels_view_wordMargin, 0);
int labelBgResId = mTypedArray.getResourceId(R.styleable.labels_view_labelBackground, 0);
if (labelBgResId != 0) {
mLabelBg = getResources().getDrawable(labelBgResId);
} else {
int labelBgColor = mTypedArray.getColor(R.styleable.labels_view_labelBackground, Color.TRANSPARENT);
mLabelBg = new ColorDrawable(labelBgColor);
}
mTypedArray.recycle();
}
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int count = getChildCount();
int maxWidth = MeasureSpec.getSize(widthMeasureSpec) - getPaddingLeft() - getPaddingRight();
int contentHeight = 0; //记录内容的高度
int lineWidth = 0; //记录行的宽度
int maxLineWidth = 0; //记录最宽的行宽
int maxItemHeight = 0; //记录一行中item高度最大的高度
int lineCount = 1;
for (int i = 0; i < count; i++) {
View view = getChildAt(i);
measureChild(view, widthMeasureSpec, heightMeasureSpec);
if (lineWidth + view.getMeasuredWidth() > maxWidth) {
lineCount++;
if (mMaxLines > 0 && lineCount > mMaxLines) {
break;
}
contentHeight += mLineMargin;
contentHeight += maxItemHeight;
maxItemHeight = 0;
maxLineWidth = Math.max(maxLineWidth, lineWidth);
lineWidth = 0;
}
lineWidth += view.getMeasuredWidth();
maxItemHeight = Math.max(maxItemHeight, view.getMeasuredHeight());
if (i != count -1) {
if (lineWidth + mWordMargin > maxWidth) {
// 换行
lineCount++;
if (mMaxLines > 0 && lineCount > mMaxLines) {
break;
}
contentHeight += mLineMargin;
contentHeight += maxItemHeight;
maxItemHeight = 0;
maxLineWidth = Math.max(maxLineWidth, lineWidth);
lineWidth = 0;
} else {
lineWidth += mWordMargin;
}
}
}
contentHeight += maxItemHeight;
maxLineWidth = Math.max(maxLineWidth, lineWidth);
setMeasuredDimension(measureWidth(widthMeasureSpec, maxLineWidth),
measureHeight(heightMeasureSpec, contentHeight));
}
private int measureWidth(int measureSpec, int contentWidth) {
int result = 0;
int specMode = MeasureSpec.getMode(measureSpec);
int specSize = MeasureSpec.getSize(measureSpec);
if (specMode == MeasureSpec.EXACTLY) {
result = specSize;
} else {
result = contentWidth + getPaddingLeft() + getPaddingRight();
if (specMode == MeasureSpec.AT_MOST) {
result = Math.min(result, specSize);
}
}
result = Math.max(result, getSuggestedMinimumWidth());
return result;
}
private int measureHeight(int measureSpec, int contentHeight) {
int result = 0;
int specMode = MeasureSpec.getMode(measureSpec);
int specSize = MeasureSpec.getSize(measureSpec);
if (specMode == MeasureSpec.EXACTLY) {
result = specSize;
} else {
result = contentHeight + getPaddingTop() + getPaddingBottom();
if (specMode == MeasureSpec.AT_MOST) {
result = Math.min(result, specSize);
}
}
result = Math.max(result, getSuggestedMinimumHeight());
return result;
}
@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
int x = getPaddingLeft();
int y = getPaddingTop();
int contentWidth = right - left;
int maxItemHeight = 0;
int lineCount = 1;
int count = getChildCount();
for (int i = 0; i < count; i++) {
View view = getChildAt(i);
if (contentWidth < x + view.getMeasuredWidth() + getPaddingRight()) {
lineCount++;
if (mMaxLines > 0 && lineCount > mMaxLines) {
break;
}
x = getPaddingLeft();
y += mLineMargin;
y += maxItemHeight;
maxItemHeight = 0;
}
view.layout(x, y, x + view.getMeasuredWidth(), y + view.getMeasuredHeight());
x += view.getMeasuredWidth();
x += mWordMargin;
maxItemHeight = Math.max(maxItemHeight, view.getMeasuredHeight());
}
}
/* 用于保存View的信息的key */
private static final String KEY_SUPER_STATE = "key_super_state";
private static final String KEY_TEXT_COLOR_STATE = "key_text_color_state";
private static final String KEY_TEXT_SIZE_STATE = "key_text_size_state";
private static final String KEY_BG_RES_ID_STATE = "key_bg_res_id_state";
private static final String KEY_PADDING_STATE = "key_padding_state";
private static final String KEY_WORD_MARGIN_STATE = "key_word_margin_state";
private static final String KEY_LINE_MARGIN_STATE = "key_line_margin_state";
private static final String KEY_SELECT_TYPE_STATE = "key_select_type_state";
private static final String KEY_MAX_SELECT_STATE = "key_max_select_state";
private static final String KEY_MAX_LINES_STATE = "key_max_lines_state";
// 由于新版(1.4.0)的标签列表允许设置任何类型的数据，而不仅仅是String。并且标签显示的内容
// 最终由LabelTextProvider提供，所以LabelsView不再在onSaveInstanceState()和onRestoreInstanceState()
// 中保存和恢复标签列表的数据。
private static final String KEY_LABELS_STATE = "key_labels_state";
private static final String KEY_SELECT_LABELS_STATE = "key_select_labels_state";
private static final String KEY_COMPULSORY_LABELS_STATE = "key_select_compulsory_state";
@Override
protected Parcelable onSaveInstanceState() {
Bundle bundle = new Bundle();
//保存父类的信息
bundle.putParcelable(KEY_SUPER_STATE, super.onSaveInstanceState());
//保存标签文字颜色
if (mTextColor != null) {
bundle.putParcelable(KEY_TEXT_COLOR_STATE, mTextColor);
}
//保存标签文字大小
bundle.putFloat(KEY_TEXT_SIZE_STATE, mTextSize);
//保存标签背景 (由于背景改用Drawable,所以不能自动保存和恢复)
// bundle.putInt(KEY_BG_RES_ID_STATE, mLabelBgResId);
//保存标签内边距
bundle.putIntArray(KEY_PADDING_STATE, new int[]{mTextPaddingLeft, mTextPaddingTop,
mTextPaddingRight, mTextPaddingBottom});
//保存标签间隔
bundle.putInt(KEY_WORD_MARGIN_STATE, mWordMargin);
//保存行间隔
bundle.putInt(KEY_LINE_MARGIN_STATE, mLineMargin);
//保存标签的选择类型
bundle.putInt(KEY_SELECT_TYPE_STATE, mSelectType.value);
//保存标签的最大选择数量
bundle.putInt(KEY_MAX_SELECT_STATE, mMaxSelect);
//保存标签的最大行数
bundle.putInt(KEY_MAX_LINES_STATE, mMaxLines);
//保存标签列表
// if (!mLabels.isEmpty()) {
// bundle.putStringArrayList(KEY_LABELS_STATE, mLabels);
// }
//保存已选择的标签列表
if (!mSelectLabels.isEmpty()) {
bundle.putIntegerArrayList(KEY_SELECT_LABELS_STATE, mSelectLabels);
}
//保存必选项列表
if (!mCompulsorys.isEmpty()) {
bundle.putIntegerArrayList(KEY_COMPULSORY_LABELS_STATE, mCompulsorys);
}
return bundle;
}
@Override
protected void onRestoreInstanceState(Parcelable state) {
if (state instanceof Bundle) {
Bundle bundle = (Bundle) state;
//恢复父类信息
super.onRestoreInstanceState(bundle.getParcelable(KEY_SUPER_STATE));
//恢复标签文字颜色
ColorStateList color = bundle.getParcelable(KEY_TEXT_COLOR_STATE);
if (color != null) {
setLabelTextColor(color);
}
//恢复标签文字大小
setLabelTextSize(bundle.getFloat(KEY_TEXT_SIZE_STATE, mTextSize));
// //恢复标签背景 (由于背景改用Drawable,所以不能自动保存和恢复)
// int resId = bundle.getInt(KEY_BG_RES_ID_STATE, mLabelBgResId);
// if (resId != 0) {
// setLabelBackgroundResource(resId);
// }
//恢复标签内边距
int[] padding = bundle.getIntArray(KEY_PADDING_STATE);
if (padding != null && padding.length == 4) {
setLabelTextPadding(padding[0], padding[1], padding[2], padding[3]);
}
//恢复标签间隔
setWordMargin(bundle.getInt(KEY_WORD_MARGIN_STATE, mWordMargin));
//恢复行间隔
setLineMargin(bundle.getInt(KEY_LINE_MARGIN_STATE, mLineMargin));
//恢复标签的选择类型
setSelectType(SelectType.get(bundle.getInt(KEY_SELECT_TYPE_STATE, mSelectType.value)));
//恢复标签的最大选择数量
setMaxSelect(bundle.getInt(KEY_MAX_SELECT_STATE, mMaxSelect));
//恢复标签的最大行数
setMaxLines(bundle.getInt(KEY_MAX_LINES_STATE, mMaxLines));
// //恢复标签列表
// ArrayList<String> labels = bundle.getStringArrayList(KEY_LABELS_STATE);
// if (labels != null && !labels.isEmpty()) {
// setLabels(labels);
// }
//恢复必选项列表
ArrayList<Integer> compulsory = bundle.getIntegerArrayList(KEY_COMPULSORY_LABELS_STATE);
if (compulsory != null && !compulsory.isEmpty()) {
setCompulsorys(compulsory);
}
//恢复已选择的标签列表
ArrayList<Integer> selectLabel = bundle.getIntegerArrayList(KEY_SELECT_LABELS_STATE);
if (selectLabel != null && !selectLabel.isEmpty()) {
int size = selectLabel.size();
int[] positions = new int[size];
for (int i = 0; i < size; i++) {
positions[i] = selectLabel.get(i);
}
setSelects(positions);
}
return;
}
super.onRestoreInstanceState(state);
}
/**
* 设置标签列表
*
* @param labels
*/
public void setLabels(List<String> labels) {
setLabels(labels, new LabelTextProvider<String>() {
@Override
public CharSequence getLabelText(TextView label, int position, String data) {
return data.trim();
}
});
}
/**
* 设置标签列表，标签列表的数据可以是任何类型的数据，它最终显示的内容由LabelTextProvider根据标签的数据提供。
*
* @param labels
* @param provider
* @param <T>
*/
public <T> void setLabels(List<T> labels, LabelTextProvider<T> provider) {
//清空原有的标签
innerClearAllSelect();
removeAllViews();
mLabels.clear();
if (labels != null) {
mLabels.addAll(labels);
int size = labels.size();
for (int i = 0; i < size; i++) {
addLabel(labels.get(i), i, provider);
}
ensureLabelClickable();
}
if (mSelectType == SelectType.SINGLE_IRREVOCABLY) {
setSelects(0);
}
}
/**
* 获取标签列表
*
* @return
*/
public <T> List<T> getLabels() {
return (List<T>) mLabels;
}
private <T> void addLabel(T data, int position, LabelTextProvider<T> provider) {
final TextView label = new TextView(mContext);
label.setPadding(mTextPaddingLeft, mTextPaddingTop, mTextPaddingRight, mTextPaddingBottom);
label.setTextSize(TypedValue.COMPLEX_UNIT_PX, mTextSize);
label.setTextColor(mTextColor != null ? mTextColor : ColorStateList.valueOf(0xFF000000));
//设置给label的背景(Drawable)是一个Drawable对象的拷贝，
// 因为如果所有的标签都共用一个Drawable对象，会引起背景错乱。
label.setBackgroundDrawable(mLabelBg.getConstantState().newDrawable());
//label通过tag保存自己的数据(data)和位置(position)
label.setTag(KEY_DATA, data);
label.setTag(KEY_POSITION, position);
label.setOnClickListener(this);
addView(label);
label.setText(provider.getLabelText(label, position, data));
}
/**
* 确保标签是否能响应事件，如果标签可选或者标签设置了点击事件监听，则响应事件。
*/
private void ensureLabelClickable() {
int count = getChildCount();
for (int i = 0; i < count; i++) {
TextView label = (TextView) getChildAt(i);
label.setClickable(mLabelClickListener != null || mSelectType != SelectType.NONE);
}
}
@Override
public void onClick(View v) {
if (v instanceof TextView) {
TextView label = (TextView) v;
if (mSelectType != SelectType.NONE) {
if (label.isSelected()) {
if (mSelectType != SelectType.SINGLE_IRREVOCABLY
&& !mCompulsorys.contains((Integer) label.getTag(KEY_POSITION))) {
setLabelSelect(label, false);
}
} else if (mSelectType == SelectType.SINGLE || mSelectType == SelectType.SINGLE_IRREVOCABLY) {
innerClearAllSelect();
setLabelSelect(label, true);
} else if (mSelectType == SelectType.MULTI
&& (mMaxSelect <= 0 || mMaxSelect > mSelectLabels.size())) {
setLabelSelect(label, true);
}
}
if (mLabelClickListener != null) {
mLabelClickListener.onLabelClick(label, label.getTag(KEY_DATA), (int) label.getTag(KEY_POSITION));
}
}
}
private void setLabelSelect(TextView label, boolean isSelect) {
if (label.isSelected() != isSelect) {
label.setSelected(isSelect);
if (isSelect) {
mSelectLabels.add((Integer) label.getTag(KEY_POSITION));
} else {
mSelectLabels.remove((Integer) label.getTag(KEY_POSITION));
}
if (mLabelSelectChangeListener != null) {
mLabelSelectChangeListener.onLabelSelectChange(label, label.getTag(KEY_DATA),
isSelect, (int) label.getTag(KEY_POSITION));
}
}
}
/**
* 取消所有选中的label
*/
public void clearAllSelect() {
if (mSelectType != SelectType.SINGLE_IRREVOCABLY) {
if (mSelectType == SelectType.MULTI && !mCompulsorys.isEmpty()) {
clearNotCompulsorySelect();
} else {
innerClearAllSelect();
}
}
}
private void innerClearAllSelect() {
int count = getChildCount();
for (int i = 0; i < count; i++) {
setLabelSelect((TextView) getChildAt(i), false);
}
mSelectLabels.clear();
}
private void clearNotCompulsorySelect() {
int count = getChildCount();
List<Integer> temps = new ArrayList<>();
for (int i = 0; i < count; i++) {
if (!mCompulsorys.contains(i)) {
setLabelSelect((TextView) getChildAt(i), false);
temps.add(i);
}
}
mSelectLabels.removeAll(temps);
}
/**
* 设置选中label
*
* @param positions
*/
public void setSelects(List<Integer> positions) {
if (positions != null) {
int size = positions.size();
int[] ps = new int[size];
for (int i = 0; i < size; i++) {
ps[i] = positions.get(i);
}
setSelects(ps);
}
}
/**
* 设置选中label
*
* @param positions
*/
public void setSelects(int... positions) {
if (mSelectType != SelectType.NONE) {
ArrayList<TextView> selectLabels = new ArrayList<>();
int count = getChildCount();
int size = mSelectType == SelectType.SINGLE || mSelectType == SelectType.SINGLE_IRREVOCABLY
? 1 : mMaxSelect;
for (int p : positions) {
if (p < count) {
TextView label = (TextView) getChildAt(p);
if (!selectLabels.contains(label)) {
setLabelSelect(label, true);
selectLabels.add(label);
}
if (size > 0 && selectLabels.size() == size) {
break;
}
}
}
for (int i = 0; i < count; i++) {
TextView label = (TextView) getChildAt(i);
if (!selectLabels.contains(label)) {
setLabelSelect(label, false);
}
}
}
}
/**
* 设置必选项，只有在多项模式下，这个方法才有效
*
* @param positions
*/
public void setCompulsorys(List<Integer> positions) {
if (mSelectType == SelectType.MULTI && positions != null) {
mCompulsorys.clear();
mCompulsorys.addAll(positions);
//必选项发生改变，就要恢复到初始状态。
innerClearAllSelect();
setSelects(positions);
}
}
/**
* 设置必选项，只有在多项模式下，这个方法才有效
*
* @param positions
*/
public void setCompulsorys(int... positions) {
if (mSelectType == SelectType.MULTI && positions != null) {
List<Integer> ps = new ArrayList<>(positions.length);
for (int i : positions) {
ps.add(i);
}
setCompulsorys(ps);
}
}
/**
* 获取必选项，
*
* @return
*/
public List<Integer> getCompulsorys() {
return mCompulsorys;
}
/**
* 清空必选项，只有在多项模式下，这个方法才有效
*/
public void clearCompulsorys() {
if (mSelectType == SelectType.MULTI && !mCompulsorys.isEmpty()) {
mCompulsorys.clear();
//必选项发生改变，就要恢复到初始状态。
innerClearAllSelect();
}
}
/**
* 获取选中的label(返回的是所有选中的标签的位置)
*
* @return
*/
public List<Integer> getSelectLabels() {
return mSelectLabels;
}
/**
* 获取选中的label(返回的是所头选中的标签的数据)
*
* @param <T>
* @return
*/
public <T> List<T> getSelectLabelDatas() {
List<T> list = new ArrayList<>();
int size = mSelectLabels.size();
for (int i = 0; i < size; i++) {
View label = getChildAt(mSelectLabels.get(i));
Object data = label.getTag(KEY_DATA);
if (data != null) {
list.add((T) data);
}
}
return list;
}
/**
* 设置标签背景
*
* @param resId
*/
public void setLabelBackgroundResource(int resId) {
setLabelBackgroundDrawable(getResources().getDrawable(resId));
}
/**
* 设置标签背景
*
* @param color
*/
public void setLabelBackgroundColor(int color) {
setLabelBackgroundDrawable(new ColorDrawable(color));
}
/**
* 设置标签背景
*
* @param drawable
*/
public void setLabelBackgroundDrawable(Drawable drawable) {
mLabelBg = drawable;
int count = getChildCount();
for (int i = 0; i < count; i++) {
TextView label = (TextView) getChildAt(i);
label.setBackgroundDrawable(mLabelBg.getConstantState().newDrawable());
}
}
/**
* 设置标签内边距
*
* @param left
* @param top
* @param right
* @param bottom
*/
public void setLabelTextPadding(int left, int top, int right, int bottom) {
if (mTextPaddingLeft != left || mTextPaddingTop != top
|| mTextPaddingRight != right || mTextPaddingBottom != bottom) {
mTextPaddingLeft = left;
mTextPaddingTop = top;
mTextPaddingRight = right;
mTextPaddingBottom = bottom;
int count = getChildCount();
for (int i = 0; i < count; i++) {
TextView label = (TextView) getChildAt(i);
label.setPadding(left, top, right, bottom);
}
}
}
public int getTextPaddingLeft() {
return mTextPaddingLeft;
}
public int getTextPaddingTop() {
return mTextPaddingTop;
}
public int getTextPaddingRight() {
return mTextPaddingRight;
}
public int getTextPaddingBottom() {
return mTextPaddingBottom;
}
/**
* 设置标签的文字大小（单位是px）
*
* @param size
*/
public void setLabelTextSize(float size) {
if (mTextSize != size) {
mTextSize = size;
int count = getChildCount();
for (int i = 0; i < count; i++) {
TextView label = (TextView) getChildAt(i);
label.setTextSize(TypedValue.COMPLEX_UNIT_PX, size);
}
}
}
public float getLabelTextSize() {
return mTextSize;
}
/**
* 设置标签的文字颜色
*
* @param color
*/
public void setLabelTextColor(int color) {
setLabelTextColor(ColorStateList.valueOf(color));
}
/**
* 设置标签的文字颜色
*
* @param color
*/
public void setLabelTextColor(ColorStateList color) {
mTextColor = color;
int count = getChildCount();
for (int i = 0; i < count; i++) {
TextView label = (TextView) getChildAt(i);
label.setTextColor(mTextColor != null ? mTextColor : ColorStateList.valueOf(0xFF000000));
}
}
public ColorStateList getLabelTextColor() {
return mTextColor;
}
/**
* 设置行间隔
*/
public void setLineMargin(int margin) {
if (mLineMargin != margin) {
mLineMargin = margin;
requestLayout();
}
}
public int getLineMargin() {
return mLineMargin;
}
/**
* 设置标签的间隔
*/
public void setWordMargin(int margin) {
if (mWordMargin != margin) {
mWordMargin = margin;
requestLayout();
}
}
public int getWordMargin() {
return mWordMargin;
}
/**
* 设置标签的选择类型
*
* @param selectType
*/
public void setSelectType(SelectType selectType) {
if (mSelectType != selectType) {
mSelectType = selectType;
//选择类型发生改变，就要恢复到初始状态。
innerClearAllSelect();
if (mSelectType == SelectType.SINGLE_IRREVOCABLY) {
setSelects(0);
}
if (mSelectType != SelectType.MULTI) {
mCompulsorys.clear();
}
ensureLabelClickable();
}
}
public SelectType getSelectType() {
return mSelectType;
}
/**
* 设置最大的选择数量
*
* @param maxSelect
*/
public void setMaxSelect(int maxSelect) {
if (mMaxSelect != maxSelect) {
mMaxSelect = maxSelect;
if (mSelectType == SelectType.MULTI) {
//最大选择数量发生改变，就要恢复到初始状态。
innerClearAllSelect();
}
}
}
public int getMaxSelect() {
return mMaxSelect;
}
/**
* 设置最大行数，小于等于0则不限行数。
*
* @param maxLines
*/
public void setMaxLines(int maxLines) {
if (mMaxLines != maxLines) {
mMaxLines = maxLines;
requestLayout();
}
}
public int getMaxLines() {
return mMaxLines;
}
/**
* 设置标签的点击监听
*
* @param l
*/
public void setOnLabelClickListener(OnLabelClickListener l) {
mLabelClickListener = l;
ensureLabelClickable();
}
/**
* 设置标签的选择监听
*
* @param l
*/
public void setOnLabelSelectChangeListener(OnLabelSelectChangeListener l) {
mLabelSelectChangeListener = l;
}
/**
* sp转px
*/
public static int sp2px(Context context, float spVal) {
return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP,
spVal, context.getResources().getDisplayMetrics());
}
public interface OnLabelClickListener {
/**
* @param label 标签
* @param data 标签对应的数据
* @param position 标签位置
*/
void onLabelClick(TextView label, Object data, int position);
}
public interface OnLabelSelectChangeListener {
/**
* @param label 标签
* @param data 标签对应的数据
* @param isSelect 是否选中
* @param position 标签位置
*/
void onLabelSelectChange(TextView label, Object data, boolean isSelect, int position);
}
/**
* 给标签提供最终需要显示的数据。因为LabelsView的列表可以设置任何类型的数据，而LabelsView里的每个item的是一
* 个TextView，只能显示CharSequence的数据，所以LabelTextProvider需要根据每个item的数据返回item最终要显示
* 的CharSequence。
*
* @param <T>
*/
public interface LabelTextProvider<T> {
/**
* 根据data和position返回label需要需要显示的数据。
*
* @param label
* @param position
* @param data
* @return
*/
CharSequence getLabelText(TextView label, int position, T data);
}
}
使用方法：
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
LabelList labelList;
Button btn_none, btn_single, btn_single_irrevocably, btn_multi, btn_multi_5, btn_multi_compulsory, btn_un_select, btn_click,btn_show;
ArrayList<TestBean> testList = new ArrayList<>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initview();
testList.add(new TestBean("Android", 1));
testList.add(new TestBean("IOS", 2));
testList.add(new TestBean("前端", 3));
testList.add(new TestBean("后台", 4));
testList.add(new TestBean("微信开发", 5));
testList.add(new TestBean("游戏开发", 6));
testList.add(new TestBean("Java", 7));
testList.add(new TestBean("JavaScript", 8));
testList.add(new TestBean("C++", 9));
testList.add(new TestBean("PHP", 10));
testList.add(new TestBean("Python", 11));
testList.add(new TestBean("Swift", 12));
labelList.setLabels(testList, new LabelList.LabelTextProvider<TestBean>() {
@Override
public CharSequence getLabelText(TextView label, int position, TestBean data) {
return data.getName();
}
});
}
public void initview() {
labelList = findViewById(R.id.labels);
btn_none = findViewById(R.id.btn_none);
btn_single = findViewById(R.id.btn_single);
btn_single_irrevocably = findViewById(R.id.btn_single_irrevocably);
btn_multi = findViewById(R.id.btn_multi);
btn_multi_5 = findViewById(R.id.btn_multi_5);
btn_multi_compulsory = findViewById(R.id.btn_multi_compulsory);
btn_un_select = findViewById(R.id.btn_un_select);
btn_click = findViewById(R.id.btn_click);
btn_show = findViewById(R.id.btn_show);
btn_none.setOnClickListener(this);
btn_single.setOnClickListener(this);
btn_single_irrevocably.setOnClickListener(this);
btn_multi.setOnClickListener(this);
btn_multi_5.setOnClickListener(this);
btn_multi_compulsory.setOnClickListener(this);
btn_un_select.setOnClickListener(this);
btn_click.setOnClickListener(this);
btn_show.setOnClickListener(this);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn_none:
labelList.setSelectType(LabelList.SelectType.NONE);
break;
case R.id.btn_single:
labelList.setSelectType(LabelList.SelectType.SINGLE);
break;
case R.id.btn_single_irrevocably:
labelList.setSelectType(LabelList.SelectType.SINGLE_IRREVOCABLY);
break;
case R.id.btn_multi:
labelList.setSelectType(LabelList.SelectType.MULTI);
labelList.setMaxSelect(0);
break;
case R.id.btn_multi_5:
labelList.setSelectType(LabelList.SelectType.MULTI);
labelList.setMaxSelect(5);
break;
case R.id.btn_multi_compulsory:
labelList.setSelectType(LabelList.SelectType.MULTI);
labelList.setMaxSelect(0);
labelList.setCompulsorys(0, 1);
break;
case R.id.btn_un_select:
labelList.clearAllSelect();
break;
case R.id.btn_click:
labelList.setSelectType(LabelList.SelectType.NONE);
labelList.setOnLabelClickListener(new LabelList.OnLabelClickListener() {
@Override
public void onLabelClick(TextView label, Object data, int position) {
Toast.makeText(MainActivity.this, "name=" + testList.get(position).getName()+"---type=" + testList.get(position).getType(), Toast.LENGTH_SHORT).show();
}
});
break;
case R.id.btn_show:
String a="";
for (int i = 0; i < labelList.getSelectLabels().size(); i++) {
Log.e("Ceshi",""+testList.get(labelList.getSelectLabels().get(i)).getName().toString());
a+="\n"+testList.get(labelList.getSelectLabels().get(i)).getName();
}
Toast.makeText(MainActivity.this, a, Toast.LENGTH_SHORT).show();
break;
}
}
}
下载地址：https://download.csdn.net/download/lanrenxiaowen/18439428