TagCloudView云标签的灵活运用

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https://github.com/kingideayou/TagCloudView 
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：https://github.com/a12a15a05/TagCloudViewDemo