动态添加按钮 TagCloudView

动态添加按钮 TagCloudView

package me.next.tagview;import android.annotation.SuppressLint;import android.content.Context;import android.content.res.TypedArray;import android.graphics.Color;import android.util.AttributeSet;import android.util.TypedValue;import android.view.LayoutInflater;import android.view.MotionEvent;import android.view.View;import android.view.ViewGroup;import android.widget.ImageView;import android.widget.TextView;import java.util.List;/** * Created by NeXT on 15-7-29. */public class TagCloudView extends ViewGroup { private static final String TAG = TagCloudView.class.getSimpleName(); private static final int TYPE_TEXT_NORMAL = 1; private List tags; private LayoutInflater mInflater; private OnTagClickListener onTagClickListener; private int sizeWidth; private int sizeHeight; private float mTagSize; private int mTagColor; private int mBackground; private int mViewBorder; private int mTagBorderHor; private int mTagBorderVer; private int mTagResId; private int mRightImageResId; private boolean mSingleLine; private boolean mShowRightImage; private boolean mShowEndText; private boolean mCanTagClick; private String endTextString; private int imageWidth; private int imageHeight; private ImageView imageView = null; private int endTextWidth = 0; private int endTextHeight = 0; private TextView endText = null; private static final int DEFAULT_TEXT_COLOR = Color.WHITE; private static final int DEFAULT_TEXT_SIZE = 14; private static final int DEFAULT_TEXT_BACKGROUND = R.drawable.tag_background; private static final int DEFAULT_VIEW_BORDER = 6; private static final int DEFAULT_TEXT_BORDER_HORIZONTAL = 8; private static final int DEFAULT_TEXT_BORDER_VERTICAL = 5; private static final int DEFAULT_TAG_RESID = R.layout.item_tag; private static final int DEFAULT_RIGHT_IMAGE = R.drawable.arrow_right; private static final boolean DEFAULT_SINGLE_LINE = false; private static final boolean DEFAULT_SHOW_RIGHT_IMAGE = true; private static final boolean DEFAULT_SHOW_END_TEXT = true; private static final String DEFAULT_END_TEXT_STRING = " … "; private static final boolean DEFAULT_CAN_TAG_CLICK = true; public TagCloudView(Context context) { this(context, null); } public TagCloudView(Context context, AttributeSet attrs) { this(context, attrs, 0); } public TagCloudView(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); mInflater = LayoutInflater.from(context); TypedArray a = context.getTheme().obtainStyledAttributes( attrs, R.styleable.TagCloudView, defStyleAttr, defStyleAttr ); mTagSize = a.getInteger(R.styleable.TagCloudView_tcvTextSize, DEFAULT_TEXT_SIZE); mTagColor = a.getColor(R.styleable.TagCloudView_tcvTextColor, DEFAULT_TEXT_COLOR); mBackground = a.getResourceId(R.styleable.TagCloudView_tcvBackground, DEFAULT_TEXT_BACKGROUND); mViewBorder = a.getDimensionPixelSize(R.styleable.TagCloudView_tcvBorder, DEFAULT_VIEW_BORDER); mTagBorderHor = a.getDimensionPixelSize( R.styleable.TagCloudView_tcvItemBorderHorizontal, DEFAULT_TEXT_BORDER_HORIZONTAL); mTagBorderVer = a.getDimensionPixelSize( R.styleable.TagCloudView_tcvItemBorderVertical, DEFAULT_TEXT_BORDER_VERTICAL); mCanTagClick = a.getBoolean(R.styleable.TagCloudView_tcvCanTagClick, DEFAULT_CAN_TAG_CLICK); mRightImageResId = a.getResourceId(R.styleable.TagCloudView_tcvRightResId, DEFAULT_RIGHT_IMAGE); mSingleLine = a.getBoolean(R.styleable.TagCloudView_tcvSingleLine, DEFAULT_SINGLE_LINE); mShowRightImage = a.getBoolean(R.styleable.TagCloudView_tcvShowRightImg, DEFAULT_SHOW_RIGHT_IMAGE); mShowEndText = a.getBoolean(R.styleable.TagCloudView_tcvShowEndText, DEFAULT_SHOW_END_TEXT); endTextString = a.getString(R.styleable.TagCloudView_tcvEndText); mTagResId = a.getResourceId(R.styleable.TagCloudView_tcvTagResId, DEFAULT_TAG_RESID); a.recycle(); } @Override public boolean onInterceptTouchEvent(MotionEvent ev) { return (!mCanTagClick && mSingleLine) || super.onInterceptTouchEvent(ev); } @Override protected void onLayout(boolean changed, int l, int t, int r, int b) { } /** * 计算 ChildView 宽高 * * @param widthMeasureSpec * @param heightMeasureSpec */ @SuppressLint("DrawAllocation") @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { /** * 计算 ViewGroup 上级容器为其推荐的宽高 */ int widthMode = MeasureSpec.getMode(widthMeasureSpec); int heightMode = MeasureSpec.getMode(heightMeasureSpec); sizeWidth = MeasureSpec.getSize(widthMeasureSpec); sizeHeight = MeasureSpec.getSize(heightMeasureSpec); //计算 childView 宽高 measureChildren(widthMeasureSpec, heightMeasureSpec); initSingleLineView(widthMeasureSpec, heightMeasureSpec); int totalWidth = 0; int totalHeight = mTagBorderVer; if (mSingleLine) { totalHeight = getSingleTotalHeight(totalWidth, totalHeight); } else { totalHeight = getMultiTotalHeight(totalWidth, totalHeight); } /** * 高度根据设置改变 * 如果为 MATCH_PARENT 则充满父窗体，否则根据内容自定义高度 */ setMeasuredDimension( sizeWidth, (heightMode == MeasureSpec.EXACTLY ? sizeHeight : totalHeight)); } /** * 初始化 singleLine 模式需要的视图 * * @param widthMeasureSpec * @param heightMeasureSpec */ private void initSingleLineView(int widthMeasureSpec, int heightMeasureSpec) { if (!mSingleLine) { return; } if (mShowRightImage) { imageView = new ImageView(getContext()); imageView.setImageResource(mRightImageResId); imageView.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT)); imageView.setScaleType(ImageView.ScaleType.CENTER_INSIDE); measureChild(imageView, widthMeasureSpec, heightMeasureSpec); imageWidth = imageView.getMeasuredWidth(); imageHeight = imageView.getMeasuredHeight(); addView(imageView); } if (mShowEndText) { endText = (TextView) mInflater.inflate(mTagResId, null); if (mTagResId == DEFAULT_TAG_RESID) { endText.setBackgroundResource(mBackground); endText.setTextSize(TypedValue.COMPLEX_UNIT_SP, mTagSize); endText.setTextColor(mTagColor); } @SuppressLint("DrawAllocation") LayoutParams layoutParams = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); endText.setLayoutParams(layoutParams); endText.setText(endTextString == null || endTextString.equals("") ? DEFAULT_END_TEXT_STRING : endTextString); measureChild(endText, widthMeasureSpec, heightMeasureSpec); endTextHeight = endText.getMeasuredHeight(); endTextWidth = endText.getMeasuredWidth(); addView(endText); endText.setOnClickListener(new OnClickListener() { @Override public void onClick(View view) { if (onTagClickListener != null) { onTagClickListener.onTagClick(-1); } } }); } } /** * 为 singleLine 模式布局，并计算视图高度 * * @param totalWidth * @param totalHeight * @return */ private int getSingleTotalHeight(int totalWidth, int totalHeight) { int childWidth; int childHeight; totalWidth += mViewBorder; int textTotalWidth = getTextTotalWidth(); if (textTotalWidth < sizeWidth - imageWidth) { endText = null; endTextWidth = 0; } for (int i = 0; i < getChildCount(); i++) { View child = getChildAt(i); childWidth = child.getMeasuredWidth(); childHeight = child.getMeasuredHeight(); if (i == 0) { totalWidth += childWidth; totalHeight = childHeight + mViewBorder; } else { totalWidth += childWidth + mTagBorderHor; } if (child.getTag() != null && (int) child.getTag() == TYPE_TEXT_NORMAL) { if (totalWidth + mTagBorderHor + mViewBorder + mViewBorder + endTextWidth + imageWidth < sizeWidth) { child.layout( totalWidth - childWidth + mTagBorderVer, totalHeight - childHeight, totalWidth + mTagBorderVer, totalHeight); } else { totalWidth -= childWidth + mViewBorder; break; } } } if (endText != null) { endText.layout( totalWidth + mViewBorder + mTagBorderVer, totalHeight - endTextHeight, totalWidth + mViewBorder + mTagBorderVer + endTextWidth, totalHeight); } totalHeight += mViewBorder; if (imageView != null) { imageView.layout( sizeWidth - imageWidth - mViewBorder, (totalHeight - imageHeight) / 2, sizeWidth - mViewBorder, (totalHeight - imageHeight) / 2 + imageHeight); } return totalHeight; } /** * 为 multiLine 模式布局，并计算视图高度 * * @param totalWidth * @param totalHeight * @return */ private int getMultiTotalHeight(int totalWidth, int totalHeight) { int childWidth; int childHeight; for (int i = 0; i < getChildCount(); i++) { View child = getChildAt(i); childWidth = child.getMeasuredWidth(); childHeight = child.getMeasuredHeight(); totalWidth += childWidth + mViewBorder; if (i == 0) { totalHeight = childHeight + mViewBorder; } // + marginLeft 保证最右侧与 ViewGroup 右边距有边界 if (totalWidth + mTagBorderHor + mViewBorder > sizeWidth) { totalWidth = mViewBorder; totalHeight += childHeight + mTagBorderVer; child.layout( totalWidth + mTagBorderHor, totalHeight - childHeight, totalWidth + childWidth + mTagBorderHor, totalHeight); totalWidth += childWidth; } else { child.layout( totalWidth - childWidth + mTagBorderHor, totalHeight - childHeight, totalWidth + mTagBorderHor, totalHeight); } } return totalHeight + mViewBorder; } private int getTextTotalWidth() { if (getChildCount() == 0) { return 0; } int totalChildWidth = 0; for (int i = 0; i < getChildCount(); i++) { View child = getChildAt(i); if (child.getTag() != null && (int) child.getTag() == TYPE_TEXT_NORMAL) { totalChildWidth += child.getMeasuredWidth() + mViewBorder; } } return totalChildWidth + mTagBorderHor * 2; } @Override public LayoutParams generateLayoutParams(AttributeSet attrs) { return super.generateLayoutParams(attrs); } public void setTags(List tagList) { this.tags = tagList; this.removeAllViews(); if (tags != null && tags.size() > 0) { for (int i = 0; i < tags.size(); i++) { TextView tagView = (TextView) mInflater.inflate(mTagResId, null); if (mTagResId == DEFAULT_TAG_RESID) { tagView.setBackgroundResource(mBackground); tagView.setTextSize(TypedValue.COMPLEX_UNIT_SP, mTagSize); tagView.setTextColor(mTagColor); } LayoutParams layoutParams = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); tagView.setLayoutParams(layoutParams); tagView.setText(tags.get(i)); tagView.setTag(TYPE_TEXT_NORMAL); final int finalI = i; tagView.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { if (onTagClickListener != null) { onTagClickListener.onTagClick(finalI); } } }); addView(tagView); } } postInvalidate(); } public void singleLine(boolean mSingleLine) { this.mSingleLine = mSingleLine; this.setTags(tags);// requestLayout(); } public void setOnTagClickListener(OnTagClickListener onTagClickListener) { this.onTagClickListener = onTagClickListener; } public interface OnTagClickListener { void onTagClick(int position); }}

tag_background.xml

item_tag.xml

compile 'com.github.kingideayou:tagcloudview:1.0.2'

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