是否有像EditText这样包含交叉按钮的小部件，或者是否有自动创建EditText的属性?我想用十字按钮删除任何写在EditText中的文本。
当前回答
我的UI部分如下所示:
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="50dp"
android:layout_marginTop="9dp"
android:padding="5dp">
<EditText
android:id="@+id/etSearchToolbar"
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:textSize="13dp"
android:padding="10dp"
android:textColor="@android:color/darker_gray"
android:textStyle="normal"
android:hint="Search"
android:imeOptions="actionSearch"
android:inputType="text"
android:background="@drawable/edittext_bg"
android:maxLines="1" />
<ImageView
android:id="@+id/ivClearSearchText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_marginRight="6dp"
android:src="@drawable/balloon_overlay_close"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true" />
</RelativeLayout>
edittext_bg.xml
<?xml version="1.0" encoding="utf-8"?>
<!-- res/drawable/rounded_edittext_focused.xml -->
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:padding="10dp"
android:shape="rectangle" >
<solid android:color="#FFFFFF" />
<stroke
android:width="1dp"
android:color="#C9C9CE" />
<corners
android:bottomLeftRadius="15dp"
android:bottomRightRadius="15dp"
android:topLeftRadius="15dp"
android:topRightRadius="15dp" />
</shape>
balloon_overlay_close.png
交叉/清除按钮隐藏/显示:
searchBox.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
if(charSequence.length() > 0){
clearSearch.setVisibility(View.VISIBLE);
}else{
clearSearch.setVisibility(View.GONE);
}
}
@Override
public void afterTextChanged(Editable editable) {}
});
处理搜索内容(即当用户从软键盘点击搜索时)
searchBox.setOnEditorActionListener(new TextView.OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
if (actionId == EditorInfo.IME_ACTION_SEARCH) {
String contents = searchBox.getText().toString().trim();
if(contents.length() > 0){
//do search
}else{
//if something to do for empty edittext
}
return true;
}
return false;
}
});
明确/十字按钮
clearSearch.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
searchBox.setText("");
}
});
其他回答
我的UI部分如下所示:
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="50dp"
android:layout_marginTop="9dp"
android:padding="5dp">
<EditText
android:id="@+id/etSearchToolbar"
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:textSize="13dp"
android:padding="10dp"
android:textColor="@android:color/darker_gray"
android:textStyle="normal"
android:hint="Search"
android:imeOptions="actionSearch"
android:inputType="text"
android:background="@drawable/edittext_bg"
android:maxLines="1" />
<ImageView
android:id="@+id/ivClearSearchText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_marginRight="6dp"
android:src="@drawable/balloon_overlay_close"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true" />
</RelativeLayout>
edittext_bg.xml
<?xml version="1.0" encoding="utf-8"?>
<!-- res/drawable/rounded_edittext_focused.xml -->
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:padding="10dp"
android:shape="rectangle" >
<solid android:color="#FFFFFF" />
<stroke
android:width="1dp"
android:color="#C9C9CE" />
<corners
android:bottomLeftRadius="15dp"
android:bottomRightRadius="15dp"
android:topLeftRadius="15dp"
android:topRightRadius="15dp" />
</shape>
balloon_overlay_close.png
交叉/清除按钮隐藏/显示:
searchBox.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
if(charSequence.length() > 0){
clearSearch.setVisibility(View.VISIBLE);
}else{
clearSearch.setVisibility(View.GONE);
}
}
@Override
public void afterTextChanged(Editable editable) {}
});
处理搜索内容(即当用户从软键盘点击搜索时)
searchBox.setOnEditorActionListener(new TextView.OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
if (actionId == EditorInfo.IME_ACTION_SEARCH) {
String contents = searchBox.getText().toString().trim();
if(contents.length() > 0){
//do search
}else{
//if something to do for empty edittext
}
return true;
}
return false;
}
});
明确/十字按钮
clearSearch.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
searchBox.setText("");
}
});
这是一个kotlin溶液。把这个助手方法放在某个kotlin文件中
fun EditText.setupClearButtonWithAction() {
addTextChangedListener(object : TextWatcher {
override fun afterTextChanged(editable: Editable?) {
val clearIcon = if (editable?.isNotEmpty() == true) R.drawable.ic_clear else 0
setCompoundDrawablesWithIntrinsicBounds(0, 0, clearIcon, 0)
}
override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) = Unit
override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) = Unit
})
setOnTouchListener(View.OnTouchListener { _, event ->
if (event.action == MotionEvent.ACTION_UP) {
if (event.rawX >= (this.right - this.compoundPaddingRight)) {
this.setText("")
return@OnTouchListener true
}
}
return@OnTouchListener false
})
}
然后像下面那样在onCreate方法中使用它，你应该很好
yourEditText.setupClearButtonWithAction()
顺便说一句，你必须添加R.drawable。Ic_clear或清除图标。这个来自谷歌- https://fonts.google.com/icons?selected=Material%20Icons%20Outlined%3Aclear%3A
在你的EditText中添加drawableEnd这样的十字:
<EditText
...
android:drawableEnd="@drawable/ic_close"
android:drawablePadding="8dp"
... />
并使用扩展处理点击(或使用OnTouchListener直接在您的EditText):
fun EditText.onDrawableEndClick(action: () -> Unit) {
setOnTouchListener { v, event ->
if (event.action == MotionEvent.ACTION_UP) {
v as EditText
val end = if (v.resources.configuration.layoutDirection == View.LAYOUT_DIRECTION_RTL)
v.left else v.right
if (event.rawX >= (end - v.compoundPaddingEnd)) {
action.invoke()
return@setOnTouchListener true
}
}
return@setOnTouchListener false
}
}
扩展用法:
editText.onDrawableEndClick {
// TODO clear action
etSearch.setText("")
}
<EditText
android:id="@+id/idSearchEditText"
android:layout_width="match_parent"
android:layout_height="@dimen/dimen_40dp"
android:drawableStart="@android:drawable/ic_menu_search"
android:drawablePadding="8dp"
android:ellipsize="start"
android:gravity="center_vertical"
android:hint="Search"
android:imeOptions="actionSearch"
android:inputType="text"
android:paddingStart="16dp"
android:paddingEnd="8dp"
/>
EditText mSearchEditText = findViewById(R.id.idSearchEditText);
mSearchEditText.addTextChangedListener(this);
mSearchEditText.setOnTouchListener(this);
@Override
public void afterTextChanged(Editable aEditable) {
int clearIcon = android.R.drawable.ic_notification_clear_all;
int searchIcon = android.R.drawable.ic_menu_search;
if (aEditable == null || TextUtils.isEmpty(aEditable.toString())) {
clearIcon = 0;
searchIcon = android.R.drawable.ic_menu_search;
} else {
clearIcon = android.R.drawable.ic_notification_clear_all;
searchIcon = 0;
}
Drawable leftDrawable = null;
if (searchIcon != 0) {
leftDrawable = getResources().getDrawable(searchIcon);
}
Drawable rightDrawable = null;
if (clearIcon != 0) {
rightDrawable = getResources().getDrawable(clearIcon);
}
mSearchEditText.setCompoundDrawablesWithIntrinsicBounds(leftDrawable, null, rightDrawable, null);
}
@Override
public boolean onTouch(View aView, MotionEvent aEvent) {
if (aEvent.getAction() == MotionEvent.ACTION_UP){
if (aEvent.getX() > ( mSearchEditText.getWidth() -
mSearchEditText.getCompoundPaddingEnd())){
mSearchEditText.setText("");
}
}
return false;
}
Drawable x = getResources().getDrawable(R.drawable.x);
x.setBounds(0, 0, x.getIntrinsicWidth(), x.getIntrinsicHeight());
mEditText.setCompoundDrawables(null, null, x, null);
式中x为:
推荐文章
- Android - SPAN_EXCLUSIVE_EXCLUSIVE跨度不能为零长度
- TextView的字体大小在Android应用程序改变字体大小从本机设置
- 如何模拟Android杀死我的进程
- 禁用EditText闪烁光标
- Android Eclipse -无法找到*.apk
- 设置TextView文本从html格式的字符串资源在XML
- 如何允许所有网络连接类型HTTP和HTTPS在Android(9)馅饼?
- Android加载JS包失败
- Android Studio, logcat在应用程序关闭后清理
- 在android中从上下文获取活动
- 无法解析主机"<URL here>"没有与主机名关联的地址
- getActivity()在Fragment函数中返回null
- 按钮背景是透明的
- 在Mac OS X上哪里安装Android SDK ?
- 我如何获得图像缩放功能?
