How do I make an http request using cookies on Android?

by ⋅ Link

How do I make an http request using cookies on Android?

original source : https://stackoverflow.com/questions/678630/how-do-i-make-an-http-request-using-cookies-on-android

It turns out that Google Android ships with Apache HttpClient 4.0, and I was able to figure out how to do it using the “Form based logon” example in the HttpClient docs:

http://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk/httpclient/src/examples/org/apache/http/examples/client/ClientFormLogin.java

import java.util.ArrayList;
import java.util.List;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.cookie.Cookie;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.protocol.HTTP;

/**
 * A example that demonstrates how HttpClient APIs can be used to perform
 * form-based logon.
 */
public class ClientFormLogin {

    public static void main(String[] args) throws Exception {

        DefaultHttpClient httpclient = new DefaultHttpClient();

        HttpGet httpget = new HttpGet("https://portal.sun.com/portal/dt");

        HttpResponse response = httpclient.execute(httpget);
        HttpEntity entity = response.getEntity();

        System.out.println("Login form get: " + response.getStatusLine());
        if (entity != null) {
            entity.consumeContent();
        }
        System.out.println("Initial set of cookies:");
        List<Cookie> cookies = httpclient.getCookieStore().getCookies();
        if (cookies.isEmpty()) {
            System.out.println("None");
        } else {
            for (int i = 0; i < cookies.size(); i++) {
                System.out.println("- " + cookies.get(i).toString());
            }
        }

        HttpPost httpost = new HttpPost("https://portal.sun.com/amserver/UI/Login?" +
                "org=self_registered_users&" +
                "goto=/portal/dt&" +
                "gotoOnFail=/portal/dt?error=true");

        List <NameValuePair> nvps = new ArrayList <NameValuePair>();
        nvps.add(new BasicNameValuePair("IDToken1", "username"));
        nvps.add(new BasicNameValuePair("IDToken2", "password"));

        httpost.setEntity(new UrlEncodedFormEntity(nvps, HTTP.UTF_8));

        response = httpclient.execute(httpost);
        entity = response.getEntity();

        System.out.println("Login form get: " + response.getStatusLine());
        if (entity != null) {
            entity.consumeContent();
        }

        System.out.println("Post logon cookies:");
        cookies = httpclient.getCookieStore().getCookies();
        if (cookies.isEmpty()) {
            System.out.println("None");
        } else {
            for (int i = 0; i < cookies.size(); i++) {
                System.out.println("- " + cookies.get(i).toString());
            }
        }

        // When HttpClient instance is no longer needed, 
        // shut down the connection manager to ensure
        // immediate deallocation of all system resources
        httpclient.getConnectionManager().shutdown();        
    }
}

How do I make an http request using cookies on Android?

by ⋅ Link

How do I make an http request using cookies on Android?

original source : https://stackoverflow.com/questions/678630/how-do-i-make-an-http-request-using-cookies-on-android

It turns out that Google Android ships with Apache HttpClient 4.0, and I was able to figure out how to do it using the “Form based logon” example in the HttpClient docs:

http://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk/httpclient/src/examples/org/apache/http/examples/client/ClientFormLogin.java

import java.util.ArrayList;
import java.util.List;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.cookie.Cookie;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.protocol.HTTP;

/**
 * A example that demonstrates how HttpClient APIs can be used to perform
 * form-based logon.
 */
public class ClientFormLogin {

    public static void main(String[] args) throws Exception {

        DefaultHttpClient httpclient = new DefaultHttpClient();

        HttpGet httpget = new HttpGet("https://portal.sun.com/portal/dt");

        HttpResponse response = httpclient.execute(httpget);
        HttpEntity entity = response.getEntity();

        System.out.println("Login form get: " + response.getStatusLine());
        if (entity != null) {
            entity.consumeContent();
        }
        System.out.println("Initial set of cookies:");
        List<Cookie> cookies = httpclient.getCookieStore().getCookies();
        if (cookies.isEmpty()) {
            System.out.println("None");
        } else {
            for (int i = 0; i < cookies.size(); i++) {
                System.out.println("- " + cookies.get(i).toString());
            }
        }

        HttpPost httpost = new HttpPost("https://portal.sun.com/amserver/UI/Login?" +
                "org=self_registered_users&" +
                "goto=/portal/dt&" +
                "gotoOnFail=/portal/dt?error=true");

        List <NameValuePair> nvps = new ArrayList <NameValuePair>();
        nvps.add(new BasicNameValuePair("IDToken1", "username"));
        nvps.add(new BasicNameValuePair("IDToken2", "password"));

        httpost.setEntity(new UrlEncodedFormEntity(nvps, HTTP.UTF_8));

        response = httpclient.execute(httpost);
        entity = response.getEntity();

        System.out.println("Login form get: " + response.getStatusLine());
        if (entity != null) {
            entity.consumeContent();
        }

        System.out.println("Post logon cookies:");
        cookies = httpclient.getCookieStore().getCookies();
        if (cookies.isEmpty()) {
            System.out.println("None");
        } else {
            for (int i = 0; i < cookies.size(); i++) {
                System.out.println("- " + cookies.get(i).toString());
            }
        }

        // When HttpClient instance is no longer needed, 
        // shut down the connection manager to ensure
        // immediate deallocation of all system resources
        httpclient.getConnectionManager().shutdown();        
    }
}

Limited Swipe Area Android

by ⋅ Link

Limited Swipe Area Android

original source : https://stackoverflow.com/questions/16671382/limited-swipe-area-android

This might be a what you need:

public class MyPager extends ViewPager {
    public MyPager(Context context) {
        super(context);
    }

    public MyPager(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {
        if(inNeutralArea(ev.getX(),ev.getY())){
            //--events re-directed to this ViewPager's onTouch() and to its child views from there--
            return false; 
        }else {
            //--events intercepted by this ViewPager's default implementation, where it looks for swipe gestures--
            return super.onInterceptTouchEvent(ev);
        }
    }

    private boolean inNeutralArea(float x, float y) {
        //--check if x,y inside non reactive area, return true/false accordingly--
        return false;
    }

}

Use this MyPager class in layout xml in place of ViewPager.

Limited Swipe Area Android

by ⋅ Link

Limited Swipe Area Android

original source : https://stackoverflow.com/questions/16671382/limited-swipe-area-android

This might be a what you need:

public class MyPager extends ViewPager {
    public MyPager(Context context) {
        super(context);
    }

    public MyPager(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {
        if(inNeutralArea(ev.getX(),ev.getY())){
            //--events re-directed to this ViewPager's onTouch() and to its child views from there--
            return false; 
        }else {
            //--events intercepted by this ViewPager's default implementation, where it looks for swipe gestures--
            return super.onInterceptTouchEvent(ev);
        }
    }

    private boolean inNeutralArea(float x, float y) {
        //--check if x,y inside non reactive area, return true/false accordingly--
        return false;
    }

}

Use this MyPager class in layout xml in place of ViewPager.

How to convert DP, PX, SP among each other, especially DP and SP?

by ⋅ Link

How to convert DP, PX, SP among each other, especially DP and SP?

original source : https://stackoverflow.com/questions/29664993/how-to-convert-dp-px-sp-among-each-other-especially-dp-and-sp

#1 answer for me

The accepted answer is missing a few useful conversions.

SP to PX

float sp = 20;
float px = sp * getResources().getDisplayMetrics().scaledDensity;

or

float px = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, sp, getResources().getDisplayMetrics());

PX to SP

float px = 70;
float sp = px / getResources().getDisplayMetrics().scaledDensity;

DP to PX

float dp = 20;
float px = dp * getResources().getDisplayMetrics().density;

or

float px = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, getResources().getDisplayMetrics());

PX to DP

float px = 70;
float dp = px / getResources().getDisplayMetrics().density;

Notes

#2 answer for me

DP to PX:

public static int convertDpToPixels(float dp, Context context) {
    int px = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, context.getResources().getDisplayMetrics());
    return px; 
}

SP to PX:

public static int convertSpToPixels(float sp, Context context) {
    int px = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, sp, context.getResources().getDisplayMetrics());
    return px; 
}

DP to SP: (why would you need it?)

public static int convertDpToSp(float dp, Context context) {
    int sp = (int) (convertDpToPixels(dp, context) / (float) convertSpToPixels(dp, context));
    return sp;
}

Please correct me if I’m wrong in the last one, made it up just now.