使用Nativescript

时间：2016-07-07 08:27:10

标签： ios nativescript

所以我使用Nativescript为Android和iOS创建应用程序，而且我在使用iOS时遇到了一些问题。

所以我有一个堆栈视图，我在其中添加了一个名为“closeKeyboard”的tap操作（当前只是向控制台发送日志消息）。 在堆栈视图中，我有文本字段。 问题是，当我按下文本字段时，堆栈视图操作也会被触发。

在Android上它按预期工作 - 选择文本字段不会触发堆栈视图操作。

以下是main-page.xml的代码

<Page xmlns="http://schemas.nativescript.org/tns.xsd" navigatingTo="onNavigatingTo">
  <StackLayout tap="closeKeyboard">
    <Label class="conf-button-label" text="Netto sum" />
    <TextField text="{{ sum }}" hint="Type number" returnKeyType="done" keyboardType="number" keyboardPatter="[0-9]*" returnPress="done" id="sum" col="0" row="0"  class=""/>
  </StackLayout>
</Page>

以下是main-page.js的代码

var createViewModel = require("./main-view-model").createViewModel;
function onNavigatingTo(args) {
    page = args.object;
}

function done(){
    console.log('Input Done');
}


function closeKeyboard(page){
    console.log('Close Keyboard Tapped');
}
exports.done = done;
exports.closeKeyboard = closeKeyboard;
exports.onNavigatingTo = onNavigatingTo;

任何人都可以帮我吗？

2 个答案:

答案 0 :(得分：1)

如果您想要创建类似javascript模糊事件或只是隐藏键盘，当您在TextView外部点击时，您可以使用本机代码为ios设置自定义手势。您可以查看下面附带的示例：

主page.xml 

<Page xmlns="http://schemas.nativescript.org/tns.xsd" loaded="loaded">
  <StackLayout id="stack">
    <Label text="Tap the button" class="title"/>
    <Button text="TAP" tap="{{ onTap }}" />
    <Label text="{{ message }}" class="message" textWrap="true"/>
    <TextView id="text" text="" hint="Enter some text" backgroundColor="yellow" updateTextTrigger="focusLost"/>
  </StackLayout>
</Page>

主page.js 

var createViewModel = require("./main-view-model").createViewModel;
var gestures = require("ui/gestures");
var observableModule = require("data/observable"); 
var observableObject = new observableModule.Observable();

var TapHandlerImpl1 = (function (_super) {
    __extends(TapHandlerImpl1, _super);
    function TapHandlerImpl1() {
        _super.apply(this, arguments);
    }
    TapHandlerImpl1.initWithOwner = function (owner) {
        var handler = TapHandlerImpl1.new();
        handler._owner = owner;
        return handler;
    };
    TapHandlerImpl1.prototype.tap = function () {
        this._owner.ios.resignFirstResponder();
    };
    TapHandlerImpl1.ObjCExposedMethods = {
        "tap": { returns: interop.types.void, params: [interop.types.id] }
    };
    return TapHandlerImpl1;
}(NSObject));

var tapHandler = null;

function loaded(args) {
    var page = args.object;
    var field = page.getViewById("text");
    if (page.ios) {
        tapHandler = TapHandlerImpl1.initWithOwner(field)
        var recognizer = UITapGestureRecognizer.alloc().initWithTargetAction(tapHandler, "tap");
        page.ios.view.addGestureRecognizer(recognizer);
    }

    field.addEventListener(observableModule.Observable.propertyChangeEvent, function(pcd){
        console.log(pcd.eventName.toString() + " " + pcd.propertyName.toString() + " " + pcd.value.toString());
    });

    page.bindingContext = observableObject; } 
exports.loaded = loaded;

然而，在this GitHub问题中也讨论了同样的问题。

答案 1 :(得分：0)

我认为唯一的方法是将07-08 19:42:14.222 798-815/? I/ActivityManager: START u0 {act=android.content.pm.action.REQUEST_PERMISSIONS pkg=com.android.packageinstaller cmp=com.android.packageinstaller/.permission.ui.GrantPermissionsActivity (has extras)} from uid 10206 on display 0 07-08 19:42:14.224 798-815/? W/ActivityManager: Bad activity token: android.os.BinderProxy@ae80cbb java.lang.ClassCastException: android.os.BinderProxy cannot be cast to com.android.server.am.ActivityRecord$Token at com.android.server.am.ActivityRecord.forTokenLocked(ActivityRecord.java:424) at com.android.server.am.ActivityStack.isInStackLocked(ActivityStack.java:467) at com.android.server.am.ActivityStackSupervisor.isInAnyStackLocked(ActivityStackSupervisor.java:592) at com.android.server.am.ActivityStackSupervisor.startActivityLocked(ActivityStackSupervisor.java:1484) at com.android.server.am.ActivityStackSupervisor.startActivityMayWait(ActivityStackSupervisor.java:1090) at com.android.server.am.ActivityManagerService.startActivityAsUser(ActivityManagerService.java:4077) at com.android.server.am.ActivityManagerService.startActivity(ActivityManagerService.java:4064) at android.app.ActivityManagerNative.onTransact(ActivityManagerNative.java:162) at com.android.server.am.ActivityManagerService.onTransact(ActivityManagerService.java:2670) at android.os.Binder.execTransact(Binder.java:453) 07-08 19:42:14.224 798-815/? W/ActivityManager: Bad activity token: android.os.BinderProxy@ae80cbb java.lang.ClassCastException: android.os.BinderProxy cannot be cast to com.android.server.am.ActivityRecord$Token at com.android.server.am.ActivityRecord.forTokenLocked(ActivityRecord.java:424) at com.android.server.am.ActivityStack.isInStackLocked(ActivityStack.java:467) at com.android.server.am.ActivityStackSupervisor.isInAnyStackLocked(ActivityStackSupervisor.java:592) at com.android.server.am.ActivityStackSupervisor.startActivityLocked(ActivityStackSupervisor.java:1484) at com.android.server.am.ActivityStackSupervisor.startActivityMayWait(ActivityStackSupervisor.java:1090) at com.android.server.am.ActivityManagerService.startActivityAsUser(ActivityManagerService.java:4077) at com.android.server.am.ActivityManagerService.startActivity(ActivityManagerService.java:4064) at android.app.ActivityManagerNative.onTransact(ActivityManagerNative.java:162) at com.android.server.am.ActivityManagerService.onTransact(ActivityManagerService.java:2670) at android.os.Binder.execTransact(Binder.java:453) 07-08 19:42:14.225 798-815/? W/ActivityManager: startActivity called from non-Activity context; forcing Intent.FLAG_ACTIVITY_NEW_TASK for: Intent { act=android.content.pm.action.REQUEST_PERMISSIONS flg=0x800000 pkg=com.android.packageinstaller cmp=com.android.packageinstaller/.permission.ui.GrantPermissionsActivity (has extras) } 07-08 19:42:14.258 12029-12029/? I/GrantPermissionsActivity: No package: null android.content.pm.PackageManager$NameNotFoundException at android.app.ApplicationPackageManager.getPackageInfo(ApplicationPackageManager.java:138) at com.android.packageinstaller.permission.ui.GrantPermissionsActivity.getCallingPackageInfo(GrantPermissionsActivity.java:349) at com.android.packageinstaller.permission.ui.GrantPermissionsActivity.onCreate(GrantPermissionsActivity.java:99) at android.app.Activity.performCreate(Activity.java:6251) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1108) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2403) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2510) at android.app.ActivityThread.-wrap11(ActivityThread.java) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1363) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:148) at android.app.ActivityThread.main(ActivityThread.java:5461) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 从Stacklayout移动到子视图Label。或者，您可以尝试为文本字段定义单独的点按操作，以覆盖stacklayout的点击操作。

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