Using Intent to open other Activity : Intent « Core Class « Android

1. Android
2. Core Class
3. Intent

Using Intent to open other Activity

    

package app.test;

import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.view.View;
import android.view.View.OnClickListener;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Button;
import android.widget.Toast;

class MyBrowserActivity extends Activity {
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.row);
    Uri url = getIntent().getData();
    WebView webView = (WebView) findViewById(R.id.WebView01);
    webView.setWebViewClient(new Callback());
    webView.loadUrl(url.toString());
  }
  private class Callback extends WebViewClient {
    @Override
    public boolean shouldOverrideUrlLoading(WebView view, String url) {
      return (false);
    }
  }
}
public class Test extends Activity {

  Button b1, b2, b3, b4, b5;
  int request_Code = 1;

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    b1 = (Button) findViewById(R.id.btn_webbrowser);
    b1.setOnClickListener(new OnClickListener() {
      public void onClick(View arg0) {
        Intent i = new Intent("android.intent.action.VIEW");
        i.setData(Uri.parse("http://www.amazon.com"));
        startActivity(i);
      }
    });
    b2 = (Button) findViewById(R.id.btn_makecalls);
    b2.setOnClickListener(new OnClickListener() {
      public void onClick(View arg0) {
        Intent i = new Intent(android.content.Intent.ACTION_CALL, Uri.parse("tel:+651234567"));
        startActivity(i);
      }
    });
    b3 = (Button) findViewById(R.id.btn_showMap);
    b3.setOnClickListener(new OnClickListener() {
      public void onClick(View arg0) {
        Intent i = new Intent(android.content.Intent.ACTION_VIEW, Uri
            .parse("geo:37.827500,-122.481670"));
        startActivity(i);
      }
    });
    b4 = (Button) findViewById(R.id.btn_chooseContact);
    b4.setOnClickListener(new OnClickListener() {
      public void onClick(View arg0) {
        Intent i = new Intent(android.content.Intent.ACTION_PICK);
        i.setType(ContactsContract.CommonDataKinds.Phone.CONTENT_TYPE);
        startActivityForResult(i, request_Code);
      }
    });

    b5 = (Button) findViewById(R.id.btn_launchMyBrowser);
    b5.setOnClickListener(new OnClickListener() {
      public void onClick(View arg0) {
        Intent i = new Intent("app.test.MyBrowser", Uri
            .parse("http://www.amazon.com"));
        i.addCategory("app.test.OtherApps");
        i.addCategory("app.test.SomeOtherApps");
        startActivity(i);
      }
    });
  }

  public void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == request_Code) {
      if (resultCode == RESULT_OK) {
        Toast.makeText(this, data.getData().toString(),
            Toast.LENGTH_SHORT).show();
        Intent i = new Intent(android.content.Intent.ACTION_VIEW,
            Uri.parse(data.getData().toString()));
        startActivity(i);
      }
    }
  }
}

//main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >
<Button
    android:id="@+id/btn_webbrowser"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="Web Browser" />    
<Button
    android:id="@+id/btn_makecalls"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="Make Calls" />   
<Button
    android:id="@+id/btn_showMap"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="Show Map" />    
<Button
    android:id="@+id/btn_chooseContact"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="Choose Contact" />
<Button
    android:id="@+id/btn_launchMyBrowser"
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="Launch My Browser" />
    
</LinearLayout>
//row.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >
<WebView 
    android:id="@+id/WebView01" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" />
</LinearLayout>

   
    
    
    
  

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