突出的TextView使用的EditText [英] Highlight Textview Using EditText

问题描述

林目前正在应用类似Android的搜索引擎，我想重点介绍的EditText搜索的词来TextView的...这是我有这么远，只突出了第一个单词在TextView中

  TV.setText（Hello World的，TextView.BufferType.SPANNABLE）;
            Spannable WordtoSpan =（Spannable）TV.getText（）;
            WordtoSpan.setSpan（新BackgroundColorSpan（0xFFFFFF00），0，notes.length（），Spannable.SPAN_EXCLUSIVE_EXCLUSIVE）;
            TV.setText（WordtoSpan）;
 

解决方案

我想你想突出的TextView其用户在一个EditText上的一个特定的字。 说等是您的EditText和电视是TextView的对象。使用下面的code：

---

 字符串ETT = et.getText（）的toString（）。
    字符串TVT = tv.getText（）的toString（）。

                INT指数= tvt.indexOf（ETT）;

                Spannable WordtoSpan =新SpannableString（tv.getText（））;
                如果（索引！= -1）
                {
                WordtoSpan.setSpan（新BackgroundColorSpan（0xFFFFFF00），索引，索引+ ett.length（），Spannable.SPAN_EXCLUSIVE_EXCLUSIVE）;
                tv.setText（WordtoSpan，TextView.BufferType.SPANNABLE）;
                }
                其他
                tv.setText（我们国家的名称是孟加拉）;
 

---

下面是结果：

---

下面是完整的code：

 公共类Motivati​​onalQuotesActivity延伸活动{
        / **第一次创建活动时调用。 * /

   按钮旁边;
   的EditText等;
   TextView的电视;
        @覆盖
        公共无效的onCreate（包savedInstanceState）{
            super.onCreate（savedInstanceState）;
            的setContentView（R.layout.main）;
       等=（EditText上）findViewById（R.id.et）;
       电视=（TextView中）findViewById（R.id.tv）;
       tv.setText（我们国家的名称是孟加拉）;

       接下来=（按钮）findViewById（R.id.button1）;
        next.setOnClickListener（新OnClickListener（）{

                公共无效的onClick（视图v）{
                    // TODO自动生成方法存根

                    。字符串ETT = et.getText（）的toString（）;
                    字符串TVT = tv.getText（）的toString（）。

                    INT指数= tvt.indexOf（ETT）;

                    Spannable WordtoSpan =新SpannableString（tv.getText（））;
                    如果（索引！= -1）
                    {
                    WordtoSpan.setSpan（新BackgroundColorSpan（0xFFFFFF00），索引，索引+ ett.length（），Spannable.SPAN_EXCLUSIVE_EXCLUSIVE）;
                    tv.setText（WordtoSpan，TextView.BufferType.SPANNABLE）;
                    }
                    其他
                    tv.setText（我们国家的名称是孟加拉）;


                }
            }）;

        }

    }
 

Im currently making a search engine like application for android and i want to highlight the searched word from edittext to textview... this is that i got so far and it only highlights the first word in the textview

TV.setText("Hello World", TextView.BufferType.SPANNABLE);
            Spannable WordtoSpan = (Spannable) TV.getText();
            WordtoSpan.setSpan(new BackgroundColorSpan(0xFFFFFF00), 0, notes.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
            TV.setText(WordtoSpan);

解决方案

I think you want to highlight a specific word of TextView which user types in a EditText. Say et is your EditText and tv is TextView object. Use the following code:

---

    String ett =et.getText().toString();
    String tvt =tv.getText().toString();

                int index = tvt.indexOf(ett);

                Spannable WordtoSpan = new SpannableString( tv.getText() );
                if(index != -1)
                {
                WordtoSpan.setSpan(new BackgroundColorSpan(0xFFFFFF00), index, index+ett.length(),Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
                tv.setText(WordtoSpan, TextView.BufferType.SPANNABLE);
                }
                else
                tv.setText("The name of our country is Bangladesh");

---

Here is the outcome:

---

Here is the complete code:

 public class MotivationalQuotesActivity extends Activity {
        /** Called when the activity is first created. */

   Button next;
   EditText et; 
   TextView tv;
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.main);
       et = (EditText) findViewById(R.id.et);
       tv = (TextView) findViewById(R.id.tv);
       tv.setText("The name of our country is Bangladesh");

       next = (Button) findViewById(R.id.button1);
        next.setOnClickListener(new OnClickListener() {

                public void onClick(View v) {
                    // TODO Auto-generated method stub

                    String ett =et.getText().toString();
                    String tvt =tv.getText().toString();

                    int index = tvt.indexOf(ett);

                    Spannable WordtoSpan = new SpannableString( tv.getText() );
                    if(index != -1)
                    {
                    WordtoSpan.setSpan(new BackgroundColorSpan(0xFFFFFF00), index, index+ett.length(),Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
                    tv.setText(WordtoSpan, TextView.BufferType.SPANNABLE);
                    }
                    else
                    tv.setText("The name of our country is Bangladesh");


                }
            });

        }

    }

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