编辑:已解决,两个xml文件“individual_stats.xml”出现在项目中。webview崩溃的活动(Android Studio)
经过在互联网上的几件研究,我还没有找到任何有关我的活动崩溃的解决方案。该活动只包含一个webview。
此外,我是Android Studio新手。
这里是致命的错误:
06-02 22:57:06.255 7618-7618/fr.berwick.smsstats E/AndroidRuntime: FATAL EXCEPTION: main
Process: fr.berwick.smsstats, PID: 7618
java.lang.RuntimeException: Unable to start activity ComponentInfo{fr.berwick.smsstats/fr.berwick.smsstats.IndividualStats}: java.lang.NullPointerException: Attempt to invoke virtual method 'android.webkit.WebSettings android.webkit.WebView.getSettings()' on a null object reference
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2659)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2724)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1473)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6123)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:757)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.webkit.WebSettings android.webkit.WebView.getSettings()' on a null object reference
at fr.berwick.smsstats.IndividualStats.onCreate(IndividualStats.java:19)
at android.app.Activity.performCreate(Activity.java:6672)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1140)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2612)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2724)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1473)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6123)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:757)
请考虑以下问题:当我的web视图添加到布局(拖动),申请ID是空白的,所以我命名的WebView“的WebView”,并补充android:id =“@ + id/WebView”到我的活动xml文件“individual_stats.xml”。
这里是IndividualStats.java文件中的代码:
package fr.berwick.smsstats;
import android.app.Activity;
import android.os.Bundle;
import android.webkit.WebView;
public class IndividualStats extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.individual_stats);
WebView webview = (WebView) findViewById(R.id.WebView);
webview.getSettings().setJavaScriptEnabled(true);
webview.loadUrl("https://speeload.com/");
}
}
感谢你的帮助,有一个伟大的日子。
我试过名称“web1”和同样的问题。 –