在Listview中搜索,并在Listview Android中突出显示搜索到的文本颜色

概述我有一个arrayadapter的列表视图..我需要在我的音乐应用程序中实现它…帮助我publicclassSearch_ClassextendsActivity{EditTextsearchedit;ListViewlistview3;SongsManagersongManager;Contextcontext;String[]abc

我有一个arrayadapter的列表视图..我需要在我的音乐应用程序中实现它…帮助我

    public class Search_Class extends Activity {        EditText searchedit;        ListVIEw ListvIEw3;        SongsManager songManager;        Context context;        String[] abc;        ArrayList<String> names;        ArrayList<String> arrayList;        ArrayAdapter<String> ad;        private ArrayList<HashMap<String, String>> songsList = new ArrayList<HashMap<String, String>>();        @OverrIDe        protected voID onCreate(Bundle savedInstanceState) {            // Todo auto-generated method stub            super.onCreate(savedInstanceState);            setContentVIEw(R.layout.my_search);            context = getBaseContext();            searchedit = (EditText) findVIEwByID(R.ID.searchedit);            ListvIEw3 = (ListVIEw) findVIEwByID(R.ID.ListvIEw3);            songManager = new SongsManager();            songsList = songManager.getPlayList(context);            names = new ArrayList<String>();            arrayList = new ArrayList<String>();            for (int i = 0; i < songsList.size(); i++) {                HashMap<String, String> obj = songsList.get(i);                names.add(obj.get("songTitle"));                arrayList.add(obj.get("songTitle"));            }            abc = new String[names.size()];            abc = names.toArray(abc);            ListvIEw3.setTextFilterEnabled(true);            // ad = new ArrayAdapter<String>(MySearch.this,            // androID.R.layout.simple_List_item_1, abc);            // ListvIEw3.setAdapter(ad);            ListvIEw3.setonItemClickListener(new OnItemClickListener() {                public voID onItemClick(AdapterVIEw<?> parent, VIEw vIEw,                        int position, long ID) {                    // getting Listitem index                    String[] abc1 = new String[arrayList.size()];                    abc1 = arrayList.toArray(abc);                    int songIndex;                    for (int i = 0; i < abc1.length; i++) {                        if (abc[position].equalsIgnoreCase(abc1[i])) {                            songIndex = i;                            Intent in = new Intent(Search_Class.this,                                    MainActivity.class);                            // Sending songIndex to PlayerActivity                            SharedPreferences sp;                            sp = getSharedPreferences("lastplayed", MODE_PRIVATE);                            Editor edit = sp.edit();                            edit.putBoolean("searchSongIndex", true);                            edit.commit();                            in.putExtra("songIndex", songIndex);                            in.putExtra("FLAG", true);                            startActivity(in);                            finish();                            break;                        }                    }                }            });            // ad.notifyDataSetChanged();            searchedit.addTextChangedListener(new TextWatcher() {                @OverrIDe                public voID onTextChanged(CharSequence arg0, int arg1, int arg2,                        int arg3) {                    // Todo auto-generated method stub                    // MySearch.this.ad.getFilter().filter(arg0);                    String text = arg0.toString().tolowerCase(Locale.getDefault());                    filter(text);                }                @OverrIDe                public voID beforeTextChanged(CharSequence arg0, int arg1,                        int arg2, int arg3) {                    // Todo auto-generated method stub                }                @OverrIDe                public voID afterTextChanged(Editable arg0) {                    // Todo auto-generated method stub                }            });        }        public voID filter(String charText) {            System.out.println("Text---" + charText);            charText = charText.tolowerCase(Locale.getDefault());            names.clear();            if (charText.length() == 0) {                System.out.println("if---" + arrayList.size());                abc = new String[arrayList.size()];                abc = arrayList.toArray(abc);                // names.addAll(arrayList);            } else {                System.out.println("else");                for (int i = 0; i < abc.length; i++) {                    System.out.println(abc[i] + "----" + charText);                    if (abc[i].tolowerCase(Locale.getDefault()).contains(charText)) {                        names.add(abc[i]);                    }                }                abc = new String[names.size()];                abc = names.toArray(abc);            }            ad = new ArrayAdapter<String>(Search_Class.this,                    androID.R.layout.simple_List_item_1, abc);            ListvIEw3.setAdapter(ad);            ad.notifyDataSetChanged();        }        @OverrIDe        public boolean onCreateOptionsMenu(Menu menu) {            // Todo auto-generated method stub            return false;        }    }Just Created A Custom `ListvIEw` Using `ListActivity` public class SearchingClass extends ListActivity {    EditText et;    ListVIEw lv;    Context context;    ArrayList<String> AllSongs;    String[] AllSongsArray;    SongsManager songManager;    private ArrayList<HashMap<String, String>> songsList = new ArrayList<HashMap<String, String>>();    SearchClass_Adapter adapter;    int textlength = 0;    @OverrIDe    protected voID onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentVIEw(R.layout.activity_searching_class);        et = (EditText) findVIEwByID(R.ID.EditText01);        lv = (ListVIEw) findVIEwByID(androID.R.ID.List);        context = getBaseContext();        songManager = new SongsManager();        songsList = songManager.getPlayList(context);        AllSongs = new ArrayList<String>();        for (int i = 0; i < songsList.size(); i++) {            HashMap<String, String> obj = songsList.get(i);            AllSongs.add(obj.get("songTitle"));        }        AllSongsArray = new String[AllSongs.size()];        AllSongsArray = AllSongs.toArray(AllSongsArray);        setlistadapter(new bsAdapter(this));        et.addTextChangedListener(new TextWatcher() {            public voID afterTextChanged(Editable s) {                // Abstract Method of TextWatcher Interface.            }            public voID beforeTextChanged(CharSequence s, int start, int count,                    int after) {                // Abstract Method of TextWatcher Interface.            }            public voID onTextChanged(CharSequence s, int start, int before,                    int count) {                textlength = et.getText().length();                AllSongs.clear();                for (int i = 0; i < AllSongsArray.length; i++) {                    if (textlength <= AllSongsArray[i].length()) {                        /***                         * If you want to highlight the countrIEs which start                         * with entered letters then choose this block. And                         * comment the below If condition Block                         */                        /*                         * if(et.getText().toString().equalsIgnoreCase( (String)                         * ListvIEw_names[i].subSequence(0, textlength))) {                         * array_sort.add(ListvIEw_names[i]);                         * image_sort.add(ListvIEw_images[i]); }                         */                        /***                         * If you choose the below block then it will act like a                         * like operator in the MysqL                         */                        if (AllSongsArray[i].tolowerCase().contains(                                et.getText().toString().tolowerCase().trim())) {                            AllSongs.add(AllSongsArray[i]);                        }                    }                }                AppendList(AllSongs);            }        });        lv.setonItemClickListener(new OnItemClickListener() {            @OverrIDe            public voID onItemClick(AdapterVIEw<?> parent, VIEw vIEw,                    int position, long ID) {                // Todo auto-generated method stub                Toast.makeText(getApplicationContext(), AllSongs.get(position),                        Toast.LENGTH_SHORT).show();            }        });    }    @OverrIDe    public boolean onCreateOptionsMenu(Menu menu) {        // Inflate the menu; this adds items to the action bar if it is present.        getMenuInflater().inflate(R.menu.searching_class, menu);        return true;    }    public voID AppendList(ArrayList<String> str) {        setlistadapter(new bsAdapter(this));    }    @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();        if (ID == R.ID.action_settings) {            return true;        }        return super.onoptionsItemSelected(item);    }    public class bsAdapter extends BaseAdapter {        Activity cntx;        public bsAdapter(Activity context) {            // Todo auto-generated constructor stub            this.cntx = context;        }        public int getCount() {            // Todo auto-generated method stub            return AllSongs.size();        }        public Object getItem(int position) {            // Todo auto-generated method stub            return AllSongs.get(position);        }        public long getItemID(int position) {            // Todo auto-generated method stub            return AllSongs.size();        }        public VIEw getVIEw(final int position, VIEw convertVIEw,                VIEwGroup parent) {            VIEw row = null;            LayoutInflater inflater = cntx.getLayoutInflater();            row = inflater.inflate(R.layout.ListvIEw_item, null);            TextVIEw tv = (TextVIEw) row.findVIEwByID(R.ID.tv_artist_name);            tv.setText(AllSongs.get(position));            return row;        }    }}

解决方法:

首先添加两个函数getData并将Data Search设置为baseadapter

   public class bsAdapter extends BaseAdapter {    Activity cntx;    public bsAdapter(Activity context) {        // Todo auto-generated constructor stub        this.cntx = context;    }    public int getCount() {        // Todo auto-generated method stub        return AllSongs.size();    }    public Object getItem(int position) {        // Todo auto-generated method stub        return AllSongs.get(position);    }    public long getItemID(int position) {        // Todo auto-generated method stub        return AllSongs.size();    }    public voID setDataSearch(String data) {            this.search = data;    }     public String getData() {        return this.search;    }

首先在Search_class中声明searchData

public String searchData;private bsAdapter mAdapter;

并声明

mAdapter = new bsAdapter(this);

然后在文本观察器中添加条件

  public voID onTextChanged(CharSequence s, int start, int before,                int count) {            textlength = et.getText().length();            AllSongs.clear();            for (int i = 0; i < AllSongsArray.length; i++) {                if (textlength <= AllSongsArray[i].length()) {                    if (AllSongsArray[i].tolowerCase().contains(                            et.getText().toString().tolowerCase().trim())) {                        AllSongs.add(AllSongsArray[i]);                    }                }              if (textlength == 0) {                     mAdapter.setDataSearch(null);                } else {                    searchData = s.toString().tolowerCase();                    mAdapter.setDataSearch(SearchData);                }         }            AppendList(AllSongs);        }

然后将此功能放在baseadapter中

public static CharSequence highlight(String search, String originalText) {       String normalizedText = normalizer.normalize(originalText, normalizer.Form.NFD).replaceAll("\p{InCombiningDiacriticalMarks}+", "").tolowerCase();       int start = normalizedText.indexOf(search);       Spannable highlighted = new SpannableString(originalText);        if (start < 0) {            // not found, nothing to to            return originalText;        } else {            while (start >= 0) {                int spanStart   = Math.min(start, originalText.length());                int spanEnd     = Math.min(start + search.length(), originalText.length());                highlighted.setSpan(new StyleSpan(androID.graphics.Typeface.BolD), spanStart, spanEnd, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);                highlighted.setSpan(new ForegroundcolorSpan(cntx.getResources().getcolor(R.color.text_color_white)), spanStart, spanEnd, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);                start = normalizedText.indexOf(search, spanEnd);            }            return highlighted;        }    }

并把这个

public VIEw getVIEw(final int position, VIEw convertVIEw,            VIEwGroup parent) {        VIEw row = null;        LayoutInflater inflater = cntx.getLayoutInflater();        row = inflater.inflate(R.layout.ListvIEw_item, null);        TextVIEw tv = (TextVIEw) row.findVIEwByID(R.ID.tv_artist_name);        if(search != null){                tv.setText(highlight(search,AllSongs.get(position));            }            else if (search == null){                tv.setText(AllSongs.get(position));            }        return row;

总结

以上是内存溢出为你收集整理的在Listview中搜索,并在Listview Android中突出显示搜索到的文本颜色全部内容，希望文章能够帮你解决在Listview中搜索,并在Listview Android中突出显示搜索到的文本颜色所遇到的程序开发问题。

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