这两天做了一个项目，发现标签不能更改任意一个标签的字体的颜色，需求如同置前标签，然后就对tagcloudeview稍做修改做了这么一个demo。不为别的，只为以后自己用的时候方便拷贝。

先看效果图：

这两天做了一个项目，需求如同置前标签，然后就对tagcloudeview稍做修改做了这么一个demo。不为别的，只为以后自己用的时候方便拷贝。

云标签开源地址

在源码里面加了两个方法

/**修改某些位置定点颜色**/ public void setTagsByPosition(HashMap<Integer, Boolean> positions, List<String> 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); if (positions.get(i)){ tagView.setTextColor(mSeclectTagColor); }else{ 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(); } /**最前面的修改颜色**/ public void setTagsByLength(int length,List<String> 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); if (i >= length){ tagView.setTextColor(mTagColor); }else{ tagView.setTextColor(mSeclectTagColor); } } 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(); }

一目了然的方法，所以不多做解释

另外加了一个选中字体颜色的全局常量，和一个int变量

private static final int SELCECT_TEXT_COLOR = R.color.yellow_bg;//选中后的标签颜色 private int mSeclectTagColor;

在styles.xml中给TagCloudView增加了一个选中字体颜色的attr

<attr name="tcvSeclecTextColor" format="reference" />

剩下就是运用的地方

不多说，直接上代码

public class MainActivity extends AppCompatActivity { private TagCloudView normalTagView;//标准 private TagCloudView selectTagUseView;//置前 private TagCloudView positionsView;//定点 private List<String> AllTagsNormal = new ArrayList<>(0);//整个标签存放集合 private List<String> AllTagsSelect = new ArrayList<>(0);//整个标签存放集合 private List<String> selectTags = new ArrayList<>(0);//选中的标签 private List<String> notSelectTags = new ArrayList<>(0);//未选中的标签 private List<String> AllTagsPosition = new ArrayList<>(0);//整个标签存放集合 private HashMap<Integer, Boolean> map = new HashMap<>(0);//记录选择的位置 @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); normalTagView = (TagCloudView) findViewById(R.id.normalTag); selectTagUseView = (TagCloudView) findViewById(R.id.selcetTagUse); positionsView = (TagCloudView) findViewById(R.id.positionsTag); setSupportActionBar(toolbar); for (int i = 0; i < 15; i++) { AllTagsNormal.add("普通标签" + i); AllTagsSelect.add("置前标签" + i); AllTagsPosition.add("定点标签" + i); map.put(i, false); } normalTagView.setOnTagClickListener(new TagCloudView.OnTagClickListener() { @Override public void onTagClick(int position) { Snackbar.make(normalTagView, AllTagsNormal.get(position), Snackbar.LENGTH_LONG) .setAction("Action", null).show(); } }); selectTagUseView.setOnTagClickListener(new TagCloudView.OnTagClickListener() { @Override public void onTagClick(int position) { if (selectTags.contains(AllTagsSelect.get(position))) {//如果选中的里面有 就删掉 扔到未选中的里面去 selectTags.remove(position); notSelectTags.add(AllTagsSelect.get(position)); } else { selectTags.add(AllTagsSelect.get(position));// notSelectTags.remove(position - selectTags.size() + 1); } Snackbar.make(selectTagUseView, AllTagsSelect.get(position), Snackbar.LENGTH_LONG) .setAction("Action", null).show(); AllTagsSelect.clear();//清空，重新装数据 AllTagsSelect.addAll(selectTags); AllTagsSelect.addAll(notSelectTags); bindSelectUseView(selectTags.size()); } }); positionsView.setOnTagClickListener(new TagCloudView.OnTagClickListener() { @Override public void onTagClick(int position) { bindPositionView(position); Snackbar.make(positionsView, AllTagsPosition.get(position), Snackbar.LENGTH_LONG) .setAction("Action", null).show(); } }); normalTagView.setTags(AllTagsNormal); int selectLength = 4; bindSelectUseView(selectLength); //用一个hashmap存放当前位置是否需要变色 bindPositionView(3); bindPositionView(6); bindPositionView(9); } /** * 定点标签记录和view变化 **/ private void bindPositionView(int position) { for (int i = 0; i < AllTagsPosition.size(); i++) { if (i == position) { if (map.get(i)) { map.put(i, false); } else { map.put(i, true); } } else { if (map.get(i)) { map.put(i, true); } else { map.put(i, false); } } } positionsView.setTagsByPosition(map, AllTagsPosition); for (int i = 0; i < AllTagsPosition.size(); i++) { if (map.get(i)) { positionsView.getChildAt(i).setBackgroundResource(R.drawable.edit_style_yellow); } } } /** * 选中标签的运用 **/ private void bindSelectUseView(int selectLength) { selectTagUseView.setTagsByLength(selectLength, AllTagsSelect); selectTags.clear(); notSelectTags.clear(); for (int i = 0; i < AllTagsSelect.size(); i++) { if (i < selectLength) { selectTags.add(AllTagsSelect.get(i));//选中的存放入集合 selectTagUseView.getChildAt(i).setBackgroundResource(R.drawable.edit_style_yellow); } else { notSelectTags.add(AllTagsSelect.get(i));//未选中的存放入集合 } } } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.menu_main, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest.xml. int id = item.getItemId(); //noinspection SimplifiableIfStatement if (id == R.id.action_settings) { return true; } return super.onOptionsItemSelected(item); }}

项目下载地址

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