触摸edittext时如何使提示消失？

In my application in android are many EditText fields. And I ran into a problem with hint. It is not disappearing when EditText is on tuch, but in disappears when i'm starting to write somathing. How can this problem be fixed? Because I need hint to disappear when the EditText field is touched.

在我的android应用程序中有许多EditText字段。我遇到了提示问题。当EditText出现时它并没有消失,但是当我开始写somathing时消失了。如何解决这个问题?因为触摸EditText字段时我需要提示消失。

It is for example:

例如:

<EditText
    android:layout_width="260dp"
    android:layout_height="30dp"
    android:ems="10"
    android:inputType="text"
    android:id="@+id/driv_lic_num_reg"
    android:hint="@string/driver_license_numb"
    android:textColor="@color/black"
    android:textColorHint="@color/grey_hint"
    android:background="@drawable/input_field_background"
    android:layout_alignParentTop="true"
    android:layout_centerHorizontal="true"
    android:layout_margin="2dp"
    android:textCursorDrawable="@color/black"
    android:textSize="15dp"
    android:paddingLeft="10dp"
    android:nextFocusDown="@+id/pass_reg"
    android:imeOptions="actionNext"
    android:maxLines="1"
    android:maxLength="50"
    android:focusableInTouchMode="true"/>

10 个解决方案

#1

Hint only disappears when you type in any text, not on focus. I don't think that there is any automatic way to do it, may be I am wrong. However, as a workaround I use the following code to remove hint on focus in EditText

键入任何文本时,提示只会消失,而不是焦点。我不认为有任何自动方式可以做到,可能是我错了。但是,作为一种解决方法,我使用以下代码删除EditText中的焦点提示

myEditText.setOnFocusChangeListener(new View.OnFocusChangeListener() {
    public void onFocusChange(View v, boolean hasFocus) {
        if (hasFocus)
            myEditText.setHint("");
        else
            myEditText.setHint("Your hint");
    }
});

#2

You can also custom your XML code by using Selector. Here is an example code.

您还可以使用Selector自定义XML代码。这是一个示例代码。

Create a selector. In file selector.xml

创建一个选择器。在文件selector.xml中

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_focused="true" android:color="@android:color/transparent" />
    <item android:color="@color/gray" />
</selector>

In your view

在你看来

android:textColorHint="@drawable/selector"

#3

Here's my solution, where the hint disappear when user focus editText and appears again when focus changes to other place if the edittext is still empty:

这是我的解决方案,当用户聚焦editText时提示消失,如果edittext仍然为空,焦点更改为其他位置时再次出现:

editText.setOnTouchListener(new OnTouchListener() {
    @Override
    public boolean onTouch(View v, MotionEvent event) {
        editText.setHint("");
        return false;
    }
});

editText.setOnFocusChangeListener(new OnFocusChangeListener() {
    @Override
    public void onFocusChange(View v, boolean hasFocus) {
        if (!hasFocus) {
            editText.setHint("Hint");
        }
    }
});

hope this helps someone

希望这有助于某人

#4

This is my solution:

这是我的解决方案:

final EditText editText = (EditText) findViewById(R.id.activity_edittext);
editText.setOnFocusChangeListener(new View.OnFocusChangeListener() {
    @Override
    public void onFocusChange(View v, boolean hasFocus) {
        if (hasFocus) {
            editText .setHint("my little hint");
        } else {
            editText .setHint("");
        }
    }
});

#5

The proposed selector solution by windyzboy doesn't work for EditTexts with centered text, because the cursor stays behind the transparent hint text instead of moving to the center.

windyzboy提出的选择器解决方案不适用于具有居中文本的EditTexts,因为光标位于透明提示文本后面而不是移动到中心。

A good way without polluting your code is to make a custom EditText, since you probably need the same style in the whole application. That way you can avoid adding checks for each EditText separately.

不污染代码的好方法是制作自定义EditText,因为在整个应用程序中可能需要相同的样式。这样您就可以避免单独为每个EditText添加检查。

public class HideHintEditText extends EditText {

    CharSequence hint;

    public HideHintEditText(Context context) {
        super(context);
        hint = this.getHint();
    }

    public HideHintEditText(Context context, AttributeSet attrs) {
        super(context, attrs);
        hint = this.getHint();
    }

    public HideHintEditText(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        hint = this.getHint();
    }

    @Override
    protected void onFocusChanged(boolean focused, int direction, Rect previouslyFocusedRect) {
        super.onFocusChanged(focused, direction, previouslyFocusedRect);

        this.setHint(focused ? "" : hint);
    }

}

#6

Try

EditText editText = (EditText) findViewById(...);
editText.setHint("");

in your onTouch logic.
However your hint must be dissapearing when you clicked on edit text. So re-check your app logic.

在你的onTouch逻辑中。但是,当您单击编辑文本时,您的提示必须消失。因此,请重新检查您的应用逻辑。

#7

Here i have used the little bit of code to hide and show hint may be it'll be helpful.

在这里,我使用了一点点代码来隐藏和显示提示可能会有所帮助。

txt_username.setOnFocusChangeListener(new OnFocusChangeListener() {

            @Override
            public void onFocusChange(View v, boolean hasFocus) {
                if(txt_username.getText().toString().isEmpty()){
                    if(hasFocus){
                        txt_username.setHint("");
                    }else{
                        txt_username.setHint(R.string.username);
                    }
                }
            }
        });

#8

findViewById(R.id.mainLayout).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                hideKeyboard();
                editText.clearFocus();
                if (TextUtils.isEmpty(editText.getText().toString())) {
                    editText.setHint("your hint");
                }
            }
        });

        editText.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                editText.setHint("");
                return false;
            }
        });


        editText.setOnFocusChangeListener(new View.OnFocusChangeListener() {
            @Override
            public void onFocusChange(View v, boolean hasFocus) {
                if (hasFocus)
                    editText.setHint("");
                else
                    editText.setHint("your hint");
            }
        });

#9

android:hint="User Name"

This code line can be done that easily way!

这条代码行可以轻松完成!

<EditText
  android:id="@+id/edtUserName"
  android:layout_width="match_parent"
  android:layout_height="50dp"
  android:layout_weight="1"
  android:ems="10"
  android:inputType="textPersonName"
  android:hint="User Name" />

#10

Every Given Solution may work or not I don't know but the Following steps would definitely help.

每个给定的解决方案可能工作与否我不知道,但以下步骤肯定会有所帮助。

First Create a dummy focus to restrain the EditText from gaining focus by

首先创建一个虚拟焦点,以限制EditText获得焦点

    <LinearLayout
    android:focusable="true"
    android:focusableInTouchMode="true"
    android:layout_width="0px"
    android:layout_height="0px"/>

Then Normally set hint in your EditText as example:

然后通常在EditText中设置提示作为示例:

    <EditText

    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:inputType="text"
    android:ems="10"
    android:id="@+id/editText"
    android:hint="Your Hint"
    android:focusableInTouchMode="true"
   />

Finally add the following code in your activity or fragment where you intend

最后在您想要的活动或片段中添加以下代码

    editText.setOnTouchListener(new View.OnTouchListener() {

        @Override
        public boolean onTouch(View v, MotionEvent event) {
            editText.setHint("");
            return false;
        }

    });