Question

我需要完成一堆单词的出现，我在textview文本中可以点击

EG。 - 我的arraylist中有两个名字--Ajay和Dhananjay 并且让我说textview中的文字是........

@Ajay，@Dhananjay，我昨天与@Vijay进行了一场精彩的战斗

现在，我需要在我的textview中突出显示所有出现的@Ajay和@Dhananjay，并使它们也可以点击但不是@Vijay（因为它不在我的arraylist中）

怎么做？

Answer 1

我运行此代码并为我工作正常，请检查：

public class MainActivity extends AppCompatActivity {
TextView text;
String string = "@Ajay, @Dhananjay, I just had a great fight with @Vijay yesterday";

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    text = (TextView) findViewById(R.id.textView1);
    SpannableString ss = new SpannableString(string);
    String[] words = string.split(" ");
    for (final String word : words) {
        if (word.startsWith("@") && word.endsWith(",")) {
            ClickableSpan clickableSpan = new ClickableSpan() {
                @Override
                public void onClick(View textView) {
                    //use word here to make a decision
                }
            };
            ss.setSpan(clickableSpan, string.indexOf(word), string.indexOf(word) + word.length(),
                    Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
        }
    }
    text.setText(ss);
    text.setMovementMethod(LinkMovementMethod.getInstance());
}
}

Answer 2

根据我的要求，Survivor's Answer中的一些修改对我有用。

  text = (TextView) findViewById(R.id.textView1);

  string += " ";

    SpannableString ss = new SpannableString(string);
    String[] words = string.split(" ");
    for (final String word : words) {
       if (word.startsWith("@") && mentionsNamesList.contains(word.substring(1))) {
             int lastIndex = 0;

            while(lastIndex != -1){

                lastIndex = string.indexOf(word+" ",lastIndex);

                if(lastIndex != -1){
            ClickableSpan clickableSpan = new ClickableSpan() {
                @Override
                public void onClick(View textView) {
                    //use word here to make a decision
                }
            };
          ss.setSpan(clickableSpan, lastIndex, lastIndex + word.length(),
                            Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);

          lastIndex += word.length();
         }
        }
    }
    text.setText(ss);
    text.setMovementMethod(LinkMovementMethod.getInstance());

完成的修改包括use of while loop in order to highlight and make clickable every occurrence of the word in the whole textview,instead of only the first one。另一个是添加空格以及要突出显示的单词，以避免在较大的单词中突出显示子字符串。例如。 test in test123

如何使文本视图中的特定单词出现可单击

2 个答案: