android：每行限制10个字符TextView

Posted 2021-04-16

我从EditText读取值并将其写入TextView

editTitle1.addTextChangedListener(new TextWatcher() {
              public void afterTextChanged(Editable s) {
              }

              public void beforeTextChanged(CharSequence s, int start, int count, int after) {
              }

              public void onTextChanged(CharSequence s, int start, int before, int count) {
                  s = editTitle1.getText().toString();
                  textTitle1.setText(s);

              }
           });

我希望在一行中 - 最多10个字符，所以如果所有20个字符 - 它是TextView中的两行，每行10个字符。我怎么能这样做？我尝试android：maxLength =“10”但它没有帮助

答案

定义一个返回格式化为每行10个字符的字符串的方法：

public String getTenCharPerLineString(String text){

    String tenCharPerLineString = "";
    while (text.length() > 10) {

        String buffer = text.substring(0, 10);
        tenCharPerLineString = tenCharPerLineString + buffer + "/n";
        text = text.substring(10);
    }

    tenCharPerLineString = tenCharPerLineString + text.substring(0);
    return tenCharPerLineString;
}

另一答案

我编辑了ramaral给出的答案，他使用了错误的转义序列

public String getTenCharPerLineString(String text){

    String tenCharPerLineString = "";
    while (text.length() > 10) {

        String buffer = text.substring(0, 10);
        tenCharPerLineString = tenCharPerLineString + buffer + "
";
        text = text.substring(10);
    }

    tenCharPerLineString = tenCharPerLineString + text.substring(0);
    return tenCharPerLineString;
}

另一答案

将以下2个属性添加到TextView定义中：

android:singleLine="false"  
android:maxems="10"