使用TextView显示字符

Question

我需要在textview中显示songtitle2.get(i).charAt(0)。我已经用歌曲名称填充了列表视图，我希望每次歌曲命名第一个字母更改时都放置分隔符。

adapter = new ArrayAdapter<String>(this,R.layout.song,songtitle);

setListAdapter(adapter);

然后我调用此方法来获取分隔符

private void alphebetdividers(ArrayList<String> songtitle2) {
    // TODO Auto-generated method stub
    dividerss = (TextView)findViewById(R.layout.song);
    int i = 0;
    int j = 0;
    while( j < songtitle.size()-1){
            if(songtitle2.get(i).charAt(0) == songtitle2.get(i+1).charAt(0)){
                Toast.makeText(getApplication(), songtitle2.get(i).charAt(0) + "== " + songtitle2.get(i+1).charAt(0), Toast.LENGTH_LONG).show();
            }else{


                      //////DISPLAY CHAR WITH TEXTVIEW//////
            }
      j++;
      i++;

}
}           

Answer 1

只需使用以下内容将char转换为String

String songName = 'My Song Name'
char my_char = songName.chatAt(0);
String newString = new String(char);

或者只是获取子字符串：

String songName = 'My Song Name'
String newString = songName.subString(0,1);

然后在textview上设置标签：

textView.setText(newString);

Answer 2

您可以定义类似

char[] ch = { 'a', 'b' };

textView.setText(ch, 0, 2);