Android webview loaddata giving NullPointerException
I have used a webview named Testview to load html data in the webview. for that I am using the following code.
Testview.loadData("<html><body>helloindia</body></html>", "text/html", "utf-8");
I have given <uses-permission android:name="andr开发者_开发技巧oid.permission.INTERNET" /> in the manifest. But this above loine of code is generating NullPointerException. Can anyone point out the problem in my code?
As @m0s pointed in comment: make sure Textview is initialized:
textview = new WebView(this); // used inside an Activity
Also, it is a Java custom to write class names with first letter capitalized (WebView) and instances with first letter in lower-case (textview), so that they are easily distinguished.
Update:
If this line returns null:
Textview = (WebView)this.findViewById(R.id.testview)
then you most probably forgot to call:
setContentView(R.layout.main);
in your activity.onCreate() method. The javadoc of findViewById(int) says:
Finds a view that was identified by the id attribute from the XML THAT WAS
PROCESSED in onCreate(Bundle).
That's what setContentView() does (processes the layout XML):
Set the activity content from a layout resource. The resource will be inflated,
adding all top-level views to the activity.
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