错误：（18，56）错误：无法找到符号变量webView的

-1

我得到这个错误错误：（18，56）错误：无法找到符号变量webView的错误：（18，56）错误：无法找到符号变量webView的

这里是Activity

package com.example.luke.sinhalasindu; 

import android.support.v7.app.ActionBarActivity; 
import android.os.Bundle; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.webkit.WebView; 


public class Ruwan_Hettiaracchi extends ActionBarActivity { 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_ruwan__hettiaracchi); 

     String url = "http://mfi.re/listen/lwmzyjsdmnri868/Ruwan_Hettiarachchi_Duka_Wadi_Nethe.mp3"; 
     WebView view = (WebView) this.findViewById(R.id.webView); 

     view.getSettings().setJavaScriptEnabled(true); 
     view.loadUrl(url); 
    } 


    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     // Inflate the menu; this adds items to the action bar if it is present. 
     getMenuInflater().inflate(R.menu.menu_ruwan__hettiaracchi, menu); 
     return true; 
    } 

    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     // Handle action bar item clicks here. The action bar will 
     // automatically handle clicks on the Home/Up button, so long 
     // as you specify a parent activity in AndroidManifest.xml. 
     int id = item.getItemId(); 

     //noinspection SimplifiableIfStatement 
     if (id == R.id.action_settings) { 
      return true; 
     } 

     return super.onOptionsItemSelected(item); 
    } 
}

代码

布局文件

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" 
    android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin" 
    android:paddingRight="@dimen/activity_horizontal_margin" 
    android:paddingTop="@dimen/activity_vertical_margin" 
    android:paddingBottom="@dimen/activity_vertical_margin" 
    tools:context="com.example.luke.sinhalasindu.Ruwan_Hettiaracchi"> 

    <WebView 
     xmlns:android="http://schemas.android.com/apk/res/android" 
     android:layout_width="400dp" 
     android:layout_height="200dp" 
     android:id="@+id/webView1" 
     /> 
</RelativeLayout>

来源

2014-12-26 badde

邮政'activity_ruwan__hettiaracchi'布局 –

删除'this.'从这个线'web视图视图=（web视图）this.findViewById（R.id.webView）添加android:id="@+id/webView";' – kId

不到风度工作.. .. – badde

从布局

WebView view = (WebView) this.findViewById(R.id.webView);

应该

WebView view = (WebView) this.findViewById(R.id.webView1);

来源

2014-12-26 05:12:26

ID是不匹配

改变这样

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:paddingBottom="@dimen/activity_vertical_margin" 
    android:paddingLeft="@dimen/activity_horizontal_margin" 
    android:paddingRight="@dimen/activity_horizontal_margin" 
    android:paddingTop="@dimen/activity_vertical_margin" 
    tools:context="com.example.luke.sinhalasindu.Ruwan_Hettiaracchi" > 

    <WebView 
     android:id="@+id/webView" 
     android:layout_width="400dp" 
     android:layout_height="200dp" /> 

</RelativeLayout>

在java中布局初始化变量WebView这样

WebView view = (WebView) findViewById(R.id.webView);

来源

2014-12-26 05:21:53 kId

上activity_main.xml中

来源

2017-07-17 10:56:38 izor

错误：（18，56）错误：无法找到符号变量webView的

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