如何将信息从一个活动的EditText传递到另一个活动，以将URL加载到该新活动的WebView中？

Question

all! I have been searching through StackOverflow for a few hours now and cannot find a solution to my problem.

I am developing an android app that needs to take input from the user in one activity through an EditText (this happens to be an int value). I then need that EditText's int value to be passed to a second activity, and parsed into a url to be loaded into a webview in that second activity. However, I cannot get this to work. In fact, I cannot get my WebView to work at all, even trying to load websites like Google. Below is my code.

public void takeInput(View view) {
        Intent intent = new Intent(this, WebViewActivity.class);
        EditText editText = (EditText) findViewById(R.id.editText);
        Integer vendorID = Integer.parseInt(editText.getText().toString());
        intent.putExtra(EXTRA_VENDORID, vendorID);
        startActivity(intent);

Above is the method that is called when an onscreen button is pressed OnClick.

The code from the next activity is below.

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_web_view);
    String testURL2 = "www.google.com";
    WebView streetwiseSite = (WebView) this.findViewById(R.id.webView);
    streetwiseSite.getSettings().setJavaScriptEnabled(true);
    Intent intent = getIntent();
    Bundle extras = intent.getExtras();
    String vendorID = extras.getString(MainActivity.EXTRA_VENDORID);
    Integer vendorID = Integer.parseInt(extras.getString(MainActivity.EXTRA_VENDORID));
    String targetURL = "www.something.org/purchase/";

Here is the XML code for my first activity.

<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=".MainActivity">

    <ImageView
        android:id="@+id/imageView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:background="@drawable/logo" />

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/imageView"
        android:layout_centerHorizontal="true"
        android:text="MobilePay"
        android:textAppearance="?android:attr/textAppearanceMedium" />

    <EditText
        android:id="@+id/editText"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:hint="Vendor ID #"
        android:inputType="number" />


    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/editText"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="72dp"
        android:onClick="takeInput"
        android:text="Pay" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/textView"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="34dp"
        android:text="Enter Vendor ID and"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <TextView
        android:id="@+id/textView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/textView2"
        android:layout_centerHorizontal="true"
        android:text="Payment Amount to Pay"
        android:textAppearance="?android:attr/textAppearanceLarge" />

</RelativeLayout>

Here is my XML code for the WebView activity, the second activity.

<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.august.streetwise.WebViewActivity">


    <WebView
        android:id="@+id/webView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentEnd="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentStart="true"
        android:layout_alignParentTop="true" />
</RelativeLayout>

Ideally this should take the user's input, parse it into the URL, and load that website. However, here are the errors I get from logcat.

04-21 23:36:14.837 17904-17904/com.myname.app W/BindingManager﹕ Cannot call determinedVisibility() - never saw a connection for the pid: 17904

Any ideas? I've been pulling my hair out over this.

Answer 1

WebView.loadUrl() does not add any protocol formatting to the beginning of the string. Therefore, www.something.org does not automatically become http://www.something.org .

Without the protocol information at the beginning of the string, WebView.loadUrl() throws the decidedly unhelpful error W/BindingManager﹕ Cannot call determinedVisibility() - never saw a connection for the pid because www.something.org isn't a complete URL.

You would think this behavior would be documented somewhere. ;)

Answer 2

change the following line

Intent intent = new Intent(this, WebViewActivity.class);
EditText editText = (EditText) findViewById(R.id.editText);
Integer vendorID = Integer.parseInt(editText.getText().toString());
 Bundle bn=new Bundle();
bn.putInt(EXTRA_VENDORID, vendorID);
intent.putExtras(bn);

startActivity(intent);

in second activity

setContentView(R.layout.activity_web_view);
String testURL2 = "www.google.com";
WebView streetwiseSite =(WebView) this.findViewById(R.id.webView);
streetwiseSite.getSettings().setJavaScriptEnabled(true);
Intent intent = getIntent();
Bundle extras = intent.getExtras();
int vendorID = extras.getInt(MainActivity.EXTRA_VENDORID);
String targetURL = "www.something.org/purchase/";

and for passing this vendorid to a url you should do something like this

 String targetURL = "www.something.org/purchase&KEYWORD="+vendorID;

nb:KEYWORD should be the exact word which is used in the api side of the url which you are using

try this to load url in webview

web.setWebViewClient(new WebViewClient());
    web.getSettings().setJavaScriptEnabled(true);
    web.loadUrl(targetURL);