我是新手kotlin,我尝试了几种使用以下代码的方法

val strAction = "Grid"
 when(strAction){
   strAction.contains("Grid")->println("position is 1")
 }

在上面的代码strAction.contains("Grid")中,这一行向我显示了一个不兼容类型的错误

今天我刚刚更新了我dependencies的material design

从1.0.0到1.1.0-alpha09

implementation 'com.google.android.material:material:1.1.0-alpha09'

现在我遇到了奇怪的问题 com.google.android.material.textfield.TextInputLayout

这是我的代码

            <com.google.android.material.textfield.TextInputLayout
                android:id="@+id/emailTextInputLayout"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_margin="@dimen/_10sdp">

            <com.google.android.material.textfield.TextInputEditText
                    android:id="@+id/emailTextInputEditText"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:hint="@string/hint_enter_email"
                    android:imeOptions="actionNext"
                    android:inputType="textEmailAddress"/>
        </com.google.android.material.textfield.TextInputLayout>

更新依赖项后，我在我的 TextInputLayout

上面代码的输出

如果我使用implementation 'com.google.android.material:material:1.0.0'我会得到预期的结果

谁能帮我解决这个问题

如果需要更多信息，请告诉我。提前致谢。您的努力将不胜感激。

更新

我已经试过 app:boxBackgroundMode="none"了，我得到了这个

,

如果我使用app:boxBackgroundMode="outline"然后得到这个

解决了

无需使用 boxBackgroundMode

你需要@style/Widget.Design.TextInputLayout在你的TextInputLayout

示例代码

        <com.google.android.material.textfield.TextInputLayout
                android:id="@+id/emailTextInputLayout"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_margin="@dimen/_10sdp"
                style="@style/Widget.Design.TextInputLayout"
                app:errorTextAppearance="@style/error_appearance"
                android:textColorHint="@android:color/white">

            <com.google.android.material.textfield.TextInputEditText
                    android:layout_width="match_parent"
                    android:id="@+id/emailTextInputEditText"
                    android:layout_height="wrap_content"
                    android:backgroundTint="@android:color/white"
                    android:gravity="center"
                    android:hint="@string/hint_enter_email"
                    android:imeOptions="actionNext"
                    android:textColorHint="@android:color/white"
                    android:inputType="textEmailAddress"
                    android:textColor="@android:color/white"
                    android:textSize="@dimen/_15ssp"/>
        </com.google.android.material.textfield.TextInputLayout>

输出

我该如何实现徒手剪裁Imageview.

使用下面的代码,我能够绘制手绘路径,并能够裁剪图像,但我面临一些其他问题

现在到目前为止我已经尝试过了

这是我的代码

使用画布裁剪图像的代码

public class SomeView extends View implements View.OnTouchListener {
    private Paint paint;

    int DIST = 2;
    boolean flgPathDraw = true;

    Point mfirstpoint = null;
    boolean bfirstpoint = false;

    Point mlastpoint = null;

    Bitmap bitmap;

    Context mContext;

    public SomeView(Context c, Bitmap bitmap) {
        super(c);

        mContext = c;
        this.bitmap = bitmap;

        setFocusable(true);
        setFocusableInTouchMode(true);

        paint = new Paint(Paint.ANTI_ALIAS_FLAG);
        paint.setStyle(Paint.Style.STROKE);
        paint.setPathEffect(new DashPathEffect(new float[]{10, 20}, 0));
        paint.setStrokeWidth(5);
        paint.setColor(Color.RED);
        paint.setStrokeJoin(Paint.Join.ROUND);
        paint.setStrokeCap(Paint.Cap.ROUND);

        this.setOnTouchListener(this);
        points = new ArrayList<Point>();

        bfirstpoint = false;
    } …

我正在SingleChildScrollView使我的屏幕滚动，但是当我添加时，SingleChildScrollView我遇到了以下错误

RenderBox was not laid out: RenderRepaintBoundary#58c65 relayoutBoundary=up1 NEEDS-PAINT
'package:flutter/src/rendering/box.dart':
Failed assertion: line 1681 pos 12: 'hasSize

我的代码

   class _RegisterPage extends State<RegisterApp> {
  final _formKey = GlobalKey<FormState>();

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      theme:
          ThemeData(primarySwatch: Colors.blue, brightness: Brightness.light),
      darkTheme: ThemeData(brightness: Brightness.dark),
      home: SafeArea(
          child: Scaffold(
        backgroundColor: Colors.white,
        body: SingleChildScrollView(
          child: Stack(
            fit: StackFit.expand,
            children: <Widget>[
              Column(
                children: <Widget>[
                  Column(
                    children: <Widget>[
                      Form(
                        key: _formKey,
                        child: new Theme(
                            data: ThemeData(
                                accentColor: Colors.purple,
                                primaryColor: Colors.blue, …

我正在按照这篇中等文章FloatingTitleTextInputField在我的反应本机项目中使用

下面是我的项目结构

这是我的代码HomeScreen.js

import React, {Component} from 'react';
import {Text, View, TextInput, StyleSheet} from 'react-native';
import FloatingTitleTextInputField from './customComponents/floating_title_text_input_field';



export default class HomeScreen extends Component {
  render() {
    return (
      // <View style={{flex: 1, justifyContent: 'center', alignItems: 'center'}}>
      //   <Text>My First React App</Text>
      //   <TextInput style={{height: 40, borderColor: 'gray', borderWidth: 1}} />
      // </View>

      <View style={styles.container}>
        <View style={styles.container}>
          <Text style={styles.headerText}>Its Amazing</Text>
          <FloatingTitleTextInputField
            attrName="firstName"
            title="First Name"
            value={this.state.firstName}
            updateMasterState={this._updateMasterState}
          />
          <FloatingTitleTextInputField
            attrName="lastName"
            title="Last Name"
            value={this.state.lastName}
            updateMasterState={this._updateMasterState}
          />
        </View> …

我已注册以下receiver内容未在Android Oreo中调用,但适用于较低版本的设备.

<receiver
     android:name=".common.receiver.ConsultReceiver"
     android:exported="false">
       <intent-filter>
            <action android:name="APP_STARTED" />
            <action android:name="APP_STARTED_FROM_ORGANIC" />
       </intent-filter>
</receiver>  

任何帮助,将不胜感激？

以下是我的依赖

implementation 'com.google.android.material:material:1.0.0'
implementation 'androidx.appcompat:appcompat:1.0.2'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'

我的layout.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/main_content"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#ffffff"
    android:fitsSystemWindows="true">


    <com.google.android.material.bottomappbar.BottomAppBar
        android:id="@+id/bottomBar"
        style="@style/Widget.MaterialComponents.BottomAppBar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom"
        android:backgroundTint="@color/colorPrimary"
        app:fabAlignmentMode="center"
        app:fabCradleMargin="10dp"
        app:fabCradleVerticalOffset="4dp"
        app:navigationIcon="@drawable/ic_drawer" >

    </com.google.android.material.bottomappbar.BottomAppBar>

    <com.google.android.material.floatingactionbutton.FloatingActionButton
        android:id="@+id/fab"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_anchor="@id/bottomBar"
        app:srcCompat="@drawable/ic_apps" />

</androidx.coordinatorlayout.widget.CoordinatorLayout>

上面的代码对我来说很好

但是，当我更新dependencies的material design

implementation 'com.google.android.material:material:1.1.0-alpha01'

我遇到以下错误：

java.lang.RuntimeException: Unable to start activity ComponentInfo{neel.com.bottomappbar/neel.com.bottomappbar.MainActivity}: android.view.InflateException: Binary XML file line #11: Binary XML file line #11: Error inflating class com.google.android.material.bottomappbar.BottomAppBar
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2485)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2545)
        at android.app.ActivityThread.access$1100(ActivityThread.java:151)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1396)
        at android.os.Handler.dispatchMessage(Handler.java:102) …

我正在使用全屏通知我的代码在Oreo版本中和以下版本中工作但是当我运行时android-Q我遇到了异常

Use of fullScreenIntent requires the USE_FULL_SCREEN_INTENT permission

我正在使用setFullScreenIntent()全屏通知

这是我的代码

NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this, "123");

notificationBuilder.setAutoCancel(true)
            .setColor(ContextCompat.getColor(this, R.color.colorAccent))
            .setContentTitle(getString(R.string.app_name))
            .setContentText("Test")
            .setDefaults(Notification.DEFAULT_ALL)
            .setWhen(System.currentTimeMillis())
            .setFullScreenIntent(pendingIntent,true)
            .setSmallIcon(R.drawable.ic_launcher_background)
            .setAutoCancel(true);

mNotificationManager.notify(1000, notificationBuilder.build());

我在我的演示项目中使用下面的路线

 routes: <String, WidgetBuilder>{
    '/HomePage': (BuildContext context) => HomePage()
  },

并尝试使用以下代码导航主屏幕

onPressed: () {
    debugPrint("Hello button is clicked");

     Navigator.of(context)
               .pushReplacementNamed('/HomePage');
 },

但是当我点击按钮时，我得到了低于异常

???????? Exception caught by gesture ???????????????????????????????????????????????????????????????
The following assertion was thrown while handling a gesture:
Could not find a generator for route RouteSettings("/HomePage", null) in the _WidgetsAppState.

Generators for routes are searched for in the following order:
 1. For the "/" route, the "home" property, if non-null, is used.
 2. Otherwise, the "routes" table is used, if it …

在android中，我们app:behavior_overlapTop="64dp"用来实现这一目标

我希望在颤动中与上面的 GIF 相同的重叠内容

我的代码

class DetailsPage extends StatefulWidget {
  @override
  _DetailsPage createState() => _DetailsPage();
}

class _DetailsPage extends State<DetailsPage> {
  @override
  void initState() {
    super.initState();
    SystemChrome.setPreferredOrientations([
      DeviceOrientation.portraitUp,
      DeviceOrientation.portraitDown,
    ]);
    _scrollController = ScrollController();
    _scrollController.addListener(_scrollListener);

  }

  ScrollController _scrollController;

  bool lastStatus = true;

  _scrollListener() {
    if (isShrink != lastStatus) {
      setState(() {
        lastStatus = isShrink;
      });
    }
  }

  bool get isShrink {
    return _scrollController.hasClients &&
        _scrollController.offset > (250 - kToolbarHeight);
  }

  @override
  void dispose() {
    _scrollController.removeListener(_scrollListener);
    super.dispose();
  }

  @override
  Widget …