Josiah Wu Josiah Wu - 7 months ago 12
Java Question

Why does my WebView doesn't work?

Well, I am totally a beginner, I was trying to do some exercise for webview. However, I can't find what problem it is. Can someone helps me? Thanks.

Here is my java class:

public class MainActivity extends AppCompatActivity {
private Button button;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button = (Button) findViewById(R.id.button1)
;
Uri uri = Uri.parse("www.google.com");
final Intent intent = new Intent(Intent.ACTION_VIEW,uri);

button.setOnClickListener(
new View.OnClickListener() {
@Override
public void onClick(View v) {
startActivity(intent);
}
}
);
}
}


And here is my manifest file:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.jinyu.webview">
<uses-permission android:name="android.permission.INTERNET"/>
<application

android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>

</manifest>


Here is my log:

4-16 22:52:03.234 23525-23525/com.example.jinyu.webview E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.jinyu.webview, PID: 23525
android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.intent.action.VIEW dat=www.baidu.com }
at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1798)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1512)
at android.app.Activity.startActivityForResult(Activity.java:3930)
at android.app.Activity.startActivityForResult(Activity.java:3890)
at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:820)
at android.app.Activity.startActivity(Activity.java:4213)
at android.app.Activity.startActivity(Activity.java:4181)
at com.example.jinyu.webview.MainActivity$1.onClick(MainActivity.java:29)
at android.view.View.performClick(View.java:5204)
at android.view.View$PerformClick.run(View.java:21153)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
04-16 22:52:04.687 23525-23525/com.example.jinyu.webview I/Process: Sending signal. PID: 23525 SIG: 9

Answer

Shortest way to achieve this is

public class MainActivity extends AppCompatActivity {
private Button button;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    button = (Button) findViewById(R.id.button1);

    button.setOnClickListener(
            new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                   startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.google.com")));
                }
            }
    );
}
}