获取无效android.webkit.WebView.loadUrl而在对话中装载的Android的

2019-10-21 19:40发布

我得到这个错误产生的原因:显示java.lang.NullPointerException:试图调用虚拟方法无效android.webkit.WebView.loadUrl当我尝试加载android.I对话框内的WebView已附上日志和代码,我下面使用了。 请提供您解决这个问题的知识。

02-06 18:07:41.605:E / AndroidRuntime(1492):了java.lang.RuntimeException:无法启动活动ComponentInfo {com.tanas.activities / com.tanas.activities.ContactInfoActivity}:显示java.lang.NullPointerException:尝试调用虚拟方法 '无效android.webkit.WebView.loadUrl(java.lang.String中)' 上的空对象引用02-06 18:07:41.605:E / AndroidRuntime(1492):在android.app.ActivityThread.performLaunchActivity (ActivityThread.java:2298)02-06 18:07:41.605:E / AndroidRuntime(1492):在android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)02-06 18:07:41.605:E / AndroidRuntime (1492):在android.app.ActivityThread.access $ 800(ActivityThread.java:144)02-06 18:07:41.605:E / AndroidRuntime(1492):在android.app.ActivityThread $ H.handleMessage(ActivityThread.java :1278)02-06 18:07:41.605:E / AndroidRuntime(1492):在android.os.Handler.dispatchMessage(Handler.java:102)02-06 18:07:41.605:E / AndroidRuntime(1492):在android.os.Looper.loop(Looper.java:135)02-06 18:07:41.605:电子 / AndroidRuntime(1492):在android.app.ActivityThread.main(ActivityThread.java:5221)02-06 18:07:41.605:E / AndroidRuntime(1492):在java.lang.reflect.Method.invoke(本地方法)02-06 18:07:41.605:E / AndroidRuntime(1492):在java.lang.reflect.Method.invoke(Method.java:372)02-06 18:07:41.605:E / AndroidRuntime(1492):在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:899)02-06 18:07:41.605:E / AndroidRuntime(1492):在com.android.internal.os.ZygoteInit.main( ZygoteInit.java:694)02-06 18:07:41.605:E / AndroidRuntime(1492):显示java.lang.NullPointerException:致尝试调用虚拟方法“无效android.webkit.WebView.loadUrl(java.lang中。上的空对象引用字符串)” 02-06 18:07:41.605:E / AndroidRuntime(1492):在com.tanas.activities.ContactInfoActivity.showCustomDialog(ContactInfoActivity.java:37)02-06 18:07:41.605: E / AndroidRuntime(1492):在com.tanas.activities.ContactInfoActivity.onCreate(ContactInfoActivity.java:21)02-06 18:07:41.605:E / Androi dRuntime(1492):在android.app.Activity.performCreate(Activity.java:5933)02-06 18:07:41.605:E / AndroidRuntime(1492):在android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105 )02-06 18:07:41.605:E / AndroidRuntime(1492):在android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2251)02-06 18:07:41.605:E / AndroidRuntime(1492):.. 10更多

码是

m_dialog = new Dialog(ContactInfoActivity.this, R.style.Dialog_No_Border);
    m_dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);


    LayoutInflater m_inflater = LayoutInflater.from(ContactInfoActivity.this);
    View m_view = m_inflater.inflate(R.layout.activity_contact, null);
    m_llMain = (LinearLayout) m_view.findViewById(R.id.cadllMain);

    m_llMain.setBackgroundResource(R.drawable.btn_style_roundcorner);

    WebView wv = (WebView) m_dialog.findViewById(R.id.webview1);
    //WebView wv = new WebView(this);
    wv.loadUrl("http:\\www.google.com");
    wv.setWebViewClient(new WebViewClient() {
        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            view.loadUrl(url);

            return true;
        }
    });

    m_dialog.setContentView(m_view);
    m_dialog.show();

Answer 1:

m_dialog没有R.id.webview1部件,显然。

如果R.id.webview1R.layout.activity_contact ,调用findViewById()m_llMain ,不m_dialog



Answer 2:

我想你不设置在活动布局。 尝试这个

 setContentView(R.layout.activity_web_view_sample);


Answer 3:

如果webView1是R.layout.activity_contact做..

WebView wv = (WebView) m_view.findViewById(R.id.webview1);


文章来源: Getting void android.webkit.WebView.loadUrl while loading webview in dialog in Android?