我使用此方法从可浏览的意图过滤器中获取URL,并将该URL粘贴到我的文本字段中,这似乎运行良好,但我想在我的webView中加载该URL。我尝试过"webView.loadUrl(intetUri);",但它使应用程序强制关闭(请参阅下面的日志猫),因此我无法在onCreate中加载URL。但是我找到了一个解决方法,即从我的文本字段中获取URL并在我的WebView中加载该URL。我在WebView设置中尝试了"WebView.loadUrl(urlEditText.getText());",但我无法使其工作,它给我的错误是"WebView类型中的方法loadUrl(String)不适用于参数(可编辑)"
代码
TextView uri = (TextView) findViewById(R.id.urlField);
//if (Intent.ACTION_MAIN.equals(getIntent().getAction())) {
String intentUri = (new Intent("com.example.browsableintent.MY_ACTION"))
.toUri(Intent.URI_INTENT_SCHEME).toString();
uri.setText(intentUri);
webView.loadUrl(intentUri);
Log.w("URLHandler", intentUri);
//} else {
Uri data = getIntent().getData();
if (data == null) {
uri.setText("");
} else {
uri.setText(getIntent().getData().toString());
}
//}
日志类别
02-11 17:50:48.678: E/AndroidRuntime(29023): FATAL EXCEPTION: main
02-11 17:50:48.678: E/AndroidRuntime(29023): Process: com.air.swiftmp, PID: 29023
02-11 17:50:48.678: E/AndroidRuntime(29023): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.air.swiftmp/com.air.swiftmp.MainActivity}: java.lang.NullPointerException
02-11 17:50:48.678: E/AndroidRuntime(29023): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2292)
02-11 17:50:48.678: E/AndroidRuntime(29023): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2350)
02-11 17:50:48.678: E/AndroidRuntime(29023): at android.app.ActivityThread.access$800(ActivityThread.java:163)
02-11 17:50:48.678: E/AndroidRuntime(29023): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1257)
02-11 17:50:48.678: E/AndroidRuntime(29023): at android.os.Handler.dispatchMessage(Handler.java:102)
02-11 17:50:48.678: E/AndroidRuntime(29023): at android.os.Looper.loop(Looper.java:157)
02-11 17:50:48.678: E/AndroidRuntime(29023): at android.app.ActivityThread.main(ActivityThread.java:5335)
02-11 17:50:48.678: E/AndroidRuntime(29023): at java.lang.reflect.Method.invokeNative(Native Method)
02-11 17:50:48.678: E/AndroidRuntime(29023): at java.lang.reflect.Method.invoke(Method.java:515)
02-11 17:50:48.678: E/AndroidRuntime(29023): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1265)
02-11 17:50:48.678: E/AndroidRuntime(29023): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1081)
02-11 17:50:48.678: E/AndroidRuntime(29023): at dalvik.system.NativeStart.main(Native Method)
02-11 17:50:48.678: E/AndroidRuntime(29023): Caused by: java.lang.NullPointerException
02-11 17:50:48.678: E/AndroidRuntime(29023): at com.air.swiftmp.MainActivity.onCreate(MainActivity.java:95)
02-11 17:50:48.678: E/AndroidRuntime(29023): at android.app.Activity.performCreate(Activity.java:5389)
02-11 17:50:48.678: E/AndroidRuntime(29023): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
02-11 17:50:48.678: E/AndroidRuntime(29023): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2256)
我只想找到一种方法,从我的文本字段中获取URL,并在onCreate或WebView设置中将其加载到WebView中。感谢
"webView.loadUrl(urlEditText.getText());"它给我的错误是"方法WebView类型中的loadUrl(字符串)不适用于arguments(可编辑)"
因为loadUrl
将url作为String,但getText()
方法返回Editable
对象,所以将toString()
与getText()
一起使用,如:
String strUrl=urlEditText.getText().toString();
if(strUrl.length()>0)
webView.loadUrl(strUrl);
else
//... show message if url is null
并获取NPE
,因此确保在初始化webView
和urlEditText
之前调用setContentView