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安德列斯-德特提尔省违约值
原标题:Android - default value in editText

在我的评估中,我有了一个编辑用户详情网页,我希望在相应的信使领域展示现名、电子邮件地址等,然后用户只要愿意,就能够抹掉这个名字,进入一个新的轨道。

是否有办法这样做? 感谢任何帮助

最佳回答

您可使用EditText.setText(......),以制定EditText领域的现行案文。

例:

yourEditText.setText(currentUserName);
问题回答

有<代码>hint特征? 您可使用setHint(>),将其编成XML(尽管您可能并不希望,因为XML不了解用户的名称/地址......)

×ml:

  android:text="yourtext"

You can use text property in your xml file for particular Edittext fields. For example :

<EditText
    android:id="@+id/ET_User"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="yourusername"/>

如同所有Edittext领域一样,如果用户想要改变Edittext特别领域,他就删除了旧案文并加入了新的案文。

http://www.ohchr.org。 仅请你获得具体<>。 在活动类别中编有dittext field id,并为之定案文。

Another way = programmatically

<>>Example:

EditText username=(EditText)findViewById(R.id.ET_User);

username.setText("jack");

你们能够这样做。

private EditText nameEdit;
private EditText emailEdit;
private String nameDefaultValue = "Your Name";
private String emailDefaultValue = "[email protected]";

A. 方法和内部方法

nameEdit = (EditText) findViewById(R.id.name);
    nameEdit.setText(nameDefaultValue); 
    nameEdit.setOnTouchListener( new OnTouchListener() {

        @Override
        public boolean onTouch(View v, MotionEvent event) {
            if (nameEdit.getText().toString().equals(nameDefaultValue)){
                nameEdit.setText("");
            }
            return false;
        }
    });

    nameEdit.setOnFocusChangeListener(new OnFocusChangeListener() {

        @Override
        public void onFocusChange(View v, boolean hasFocus) {               
            if(!hasFocus && TextUtils.isEmpty(nameEdit.getText().toString())){
                nameEdit.setText(nameDefaultValue);
            } else if (hasFocus && nameEdit.getText().toString().equals(nameDefaultValue)){
                nameEdit.setText("");
            }
        }
    });     

    emailEdit = (EditText)findViewById(R.id.email);
    emailEdit.setText(emailDefaultValue);   
    emailEdit.setOnFocusChangeListener(new OnFocusChangeListener() {

        @Override
        public void onFocusChange(View v, boolean hasFocus) {               
            if(!hasFocus && TextUtils.isEmpty(emailEdit.getText().toString())){
                emailEdit.setText(emailDefaultValue);
            } else if (hasFocus && emailEdit.getText().toString().equals(emailDefaultValue)){
                emailEdit.setText("");
            }
        }
    });

首先,需要装上用户细节

然后,你需要找到你。 如果没有,EditText

<编码> EditText et = (EditText)findViewById(R.id.youredittext);

页: 1

et.setText(theUserName);
 public class Main extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        EditText et = (EditText) findViewById(R.id.et);
        EditText et_city = (EditText) findViewById(R.id.et_city);
        // Set the default text of second EditText widget
        et_city.setText("USA");
 }
}

1. 固定违约值或roid:

我们希望在今后版本的SDK中,每个观点和海底观点或群体观点都有一个缺省值。 但要克服这一点,仅仅在提交之前,检查是否真的空洞,然后分配违约值。

例如:

   /* add 0 as default numeric value to a price field when skipped by a user,
                    in order to avoid parsing error of empty or improper format value. */
                    if (Objects.requireNonNull(edPrice.getText()).toString().trim().isEmpty())
                    edPrice.setText("0");




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