您好我想这样做：我有两个EditText和一个按钮，如果其中一个EditText为空，我想禁用该按钮。要做到这一点，我试试这个：
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<widget id="com.ionicframework.someId" version="0.0.1" xmlns="http://www.w3.org/ns/widgets" xmlns:cdv="http://cordova.apache.org/ns/1.0">
<name>Some Name</name>
<description>Some Description</description>
<author email="someEmail@gmail.com" href="http://someDomain.com/">Some Author</author>
<content src="index.html"/>
<access origin="*"/>
<allow-navigation href="http://ionic.local/*"/>
<allow-intent href="http://*/*"/>
<allow-intent href="https://*/*"/>
<allow-intent href="tel:*"/>
<allow-intent href="sms:*"/>
<allow-intent href="mailto:*"/>
<allow-intent href="geo:*"/>
<preference name="webviewbounce" value="false"/>
<preference name="UIWebViewBounce" value="false"/>
<preference name="DisallowOverscroll" value="true"/>
<preference name="android-minSdkVersion" value="16"/>
<preference name="BackupWebStorage" value="none"/>
<preference name="SplashMaintainAspectRatio" value="true"/>
<preference name="FadeSplashScreenDuration" value="300"/>
<preference name="SplashShowOnlyFirstTime" value="false"/>
<preference name="SplashScreen" value="screen"/>
<preference name="SplashScreenDelay" value="3000"/>
<preference name="ShowSplashScreenSpinner" value="false"/>
<preference name="Orientation" value="landscape"/>
<preference name="loadUrlTimeoutValue" value="700000"/>
<platform name="android">
<allow-intent href="market:*"/>
<icon src="resources/android/icon/drawable-ldpi-icon.png" density="ldpi"/>
<icon src="resources/android/icon/drawable-mdpi-icon.png" density="mdpi"/>
<icon src="resources/android/icon/drawable-hdpi-icon.png" density="hdpi"/>
<icon src="resources/android/icon/drawable-xhdpi-icon.png" density="xhdpi"/>
<icon src="resources/android/icon/drawable-xxhdpi-icon.png" density="xxhdpi"/>
<icon src="resources/android/icon/drawable-xxxhdpi-icon.png" density="xxxhdpi"/>
<splash src="resources/android/splash/drawable-land-ldpi-screen.png" density="land-ldpi"/>
<splash src="resources/android/splash/drawable-land-mdpi-screen.png" density="land-mdpi"/>
<splash src="resources/android/splash/drawable-land-hdpi-screen.png" density="land-hdpi"/>
<splash src="resources/android/splash/drawable-land-xhdpi-screen.png" density="land-xhdpi"/>
<splash src="resources/android/splash/drawable-land-xxhdpi-screen.png" density="land-xxhdpi"/>
<splash src="resources/android/splash/drawable-land-xxxhdpi-screen.png" density="land-xxxhdpi"/>
</platform>
<platform name="ios">
<allow-intent href="itms:*"/>
<allow-intent href="itms-apps:*"/>
<icon src="resources/ios/icon/icon.png" width="57" height="57"/>
<icon src="resources/ios/icon/icon@2x.png" width="114" height="114"/>
<icon src="resources/ios/icon/icon-40.png" width="40" height="40"/>
<icon src="resources/ios/icon/icon-40@2x.png" width="80" height="80"/>
<icon src="resources/ios/icon/icon-40@3x.png" width="120" height="120"/>
<icon src="resources/ios/icon/icon-50.png" width="50" height="50"/>
<icon src="resources/ios/icon/icon-50@2x.png" width="100" height="100"/>
<icon src="resources/ios/icon/icon-60.png" width="60" height="60"/>
<icon src="resources/ios/icon/icon-60@2x.png" width="120" height="120"/>
<icon src="resources/ios/icon/icon-60@3x.png" width="180" height="180"/>
<icon src="resources/ios/icon/icon-72.png" width="72" height="72"/>
<icon src="resources/ios/icon/icon-72@2x.png" width="144" height="144"/>
<icon src="resources/ios/icon/icon-76.png" width="76" height="76"/>
<icon src="resources/ios/icon/icon-76@2x.png" width="152" height="152"/>
<icon src="resources/ios/icon/icon-83.5@2x.png" width="167" height="167"/>
<icon src="resources/ios/icon/icon-small.png" width="29" height="29"/>
<icon src="resources/ios/icon/icon-small@2x.png" width="58" height="58"/>
<icon src="resources/ios/icon/icon-small@3x.png" width="87" height="87"/>
<splash height="1136" src="resources/ios/splash/Default-568h@2x~iphone.png" width="640" />
<splash height="1334" src="resources/ios/splash/Default-667h.png" width="750" />
<splash height="2208" src="resources/ios/splash/Default-736h.png" width="1242" />
<splash height="1536" src="resources/ios/splash/Default-Landscape@2x~ipad.png" width="2048" />
<splash height="1242" src="resources/ios/splash/Default-Landscape-736h.png" width="2208" />
<splash height="2048" src="resources/ios/splash/Default-Landscape@~ipadpro.png" width="2732" />
<splash height="768" src="resources/ios/splash/Default-Landscape~ipad.png" width="1024" />
<splash height="2048" src="resources/ios/splash/Default-Portrait@2x~ipad.png" width="1536" />
<splash height="2732" src="resources/ios/splash/Default-Portrait@~ipadpro.png" width="2048" />
<splash height="1024" src="resources/ios/splash/Default-Portrait~ipad.png" width="768" />
<splash height="960" src="resources/ios/splash/Default@2x~iphone.png" width="640" />
<splash height="480" src="resources/ios/splash/Default~iphone.png" width="320" />
</platform>
<platform name="wp8">
<icon height="99" src="resources\wp8\icon\ApplicationIcon.png" width="99"/>
<icon height="159" src="resources\wp8\icon\Background.png" width="159"/>
</platform>
<icon src="resources\android\icon\drawable-xhdpi-icon.png"/>
<engine name="android" spec="^6.2.3"/>
<engine name="ios" spec="^4.4.0"/>
<plugin name="cordova-plugin-console" spec="1.0.5"/>
<plugin name="cordova-plugin-device" spec="1.1.4"/>
<plugin name="cordova-plugin-screen-orientation" spec="~2.0.1"/>
<plugin name="cordova-plugin-splashscreen" spec="~4.0.1"/>
<plugin name="cordova-plugin-statusbar" spec="2.2.1"/>
<plugin name="cordova-plugin-whitelist" spec="1.3.1"/>
<plugin name="ionic-plugin-keyboard" spec="~2.2.1"/>
<plugin name="cordova-plugin-wkwebview-engine" spec="https://github.com/ionic-team/cordova-plugin-wkwebview-engine.git" />
</widget>
问题是我的按钮每次都禁用...而且当两个EditText不为空时我会点击按钮...
我该怎么做？
谢谢！
答案 0 :(得分：1)
编辑：经过OP的澄清。 如果要检查两个editTexts，可以执行以下操作，
boolean editText1Empty = true;
boolean editText2Empty = true;
editText1.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) {
editText1Empty = charSequence.length() == 0;
checkButton();
}
@Override
public void afterTextChanged(Editable editable) {
}
});
editText2.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) {
editText2Empty = charSequence.length() == 0;
checkButton();
}
@Override
public void afterTextChanged(Editable editable) {
}
});
void checkButton() {
button.setEnable(!editText1Empty && !editText2Empty);
}