小编Jit*_*Jit的帖子

我是Ionic 2的初学者.我想在Ionic中使用相机.我关注了https://ionicframework.com/docs/native/camera/ tutorial.我已经安装了cordova-plugin-camera插件并使用cli代码安装了ionic-native/camera.

当我为项目服务时,它显示运行时错误:

未捕获(承诺):错误:没有相机提供商!injectionError

我发送app.module.ts,html页面,并输入脚本页面.请看一看.

app.module.ts

import { NgModule, ErrorHandler } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { IonicApp, IonicModule, IonicErrorHandler } from 'ionic-angular';
import { MyApp } from './app.component';
import { HttpModule } from '@angular/http';

import { AboutPage } from '../pages/about/about';
import { ContactPage } from '../pages/contact/contact';
import { HomePage } from '../pages/home/home';
import { TabsPage } from '../pages/tabs/tabs';

import { StatusBar } from '@ionic-native/status-bar';
import { SplashScreen } from '@ionic-native/splash-screen';
import …

嗨,我正在使用"android.support.v4.widget.DrawerLayout"抽屉.我想改变抽屉图标的颜色.请告诉我如何做到这一点.我分享我的代码.请看一下并建议我如何更改图标颜色更改.

 toolbar = (Toolbar) findViewById(R.id.tool_bar);
 setSupportActionBar(toolbar);
 getSupportActionBar().setDisplayHomeAsUpEnabled(true);
 toolbar.setNavigationIcon(R.drawable.drawer);
 toolbar.hideOverflowMenu();
 getSupportActionBar().setTitle(null);
 ImageView img = (ImageView) findViewById(R.id.imgCourses);   
 mRecyclerView = (RecyclerView) findViewById(R.id.RecyclerView);
 mRecyclerView.setHasFixedSize(true);
 Drawer = (DrawerLayout) findViewById(R.id.DrawerLayout);
 mAdapter = new MyAdapter(TITLES,NAME,EMAIL,PROFILE,this);  
 mRecyclerView.setAdapter(mAdapter); 
 mRecyclerView.setVerticalScrollBarEnabled(false);
 mLayoutManager = new LinearLayoutManager(this);
 mRecyclerView.setLayoutManager(mLayoutManager);  
 mDrawerToggle = new   ActionBarDrawerToggle(this,
                                             Drawer,
                                             toolbar,
                                             R.string.openDrawer,
                                             R.string.closeDrawer)
    {
        @Override
        public void onDrawerOpened(View drawerView) {
            super.onDrawerOpened(drawerView);
        }

        @Override
        public void onDrawerClosed(View drawerView) {
            super.onDrawerClosed(drawerView);

        }

    };
    Drawer.setDrawerListener(mDrawerToggle);
    mDrawerToggle.syncState();
    Drawer.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED);