Android Open Source - IFDTC_AndroidExample Main Activity

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License

The source code is released under:

This is free and unencumbered software released into the public domain. Anyone is free to copy, modify, publish, use, compile, sell, or distribute this software, either in source code form or as a co...

Java Source Code

package edu.umich.ifdtc_workshop.app;
/* w w  w  . j a  v  a2 s .  co  m*/
import android.content.Context;
import android.content.Intent;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Bundle;
import android.os.StrictMode;
import android.provider.MediaStore;
import android.support.v7.app.ActionBarActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;

import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;


public class MainActivity extends ActionBarActivity {
    static final int SHOW_AGE_REQUEST_CODE = 1000;
    static final int SHOW_HUMAN_REQUEST_CODE = 1001;
    static final int SHOW_OPEN_END_REQUEST_CODE = 1002;
    static final int SHOW_LOCATION_REQUEST_CODE = 1003;
    static final int TAKE_PICTURE_REQUEST_CODE = 1004;
    static final String ageState = "ageState";
    static final String humanState = "humanState";
    static final String openEndState = "openEndState";
    static final String locationState = "locationState";

    String age;
    String human;
    String openEnd;
    String location;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        setupViews();

        if(savedInstanceState != null)
            restoreState(savedInstanceState);

        StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
        StrictMode.setThreadPolicy(policy);
    }

    private void restoreState(Bundle savedInstanceState) {
        age = savedInstanceState.getString(ageState, null);
        human = savedInstanceState.getString(humanState, null);
        openEnd = savedInstanceState.getString(openEndState, null);
        location = savedInstanceState.getString(locationState, null);
        updateTextDataSummary();
    }

    private void setupViews() {
        Button enterAgeButton = (Button) findViewById(R.id.enterAgeButton );
        Button enterHumanButton = (Button) findViewById(R.id.enterHumanButton );
        Button enterOpenEndButton = (Button) findViewById(R.id.enterOpenEndButton );
        Button enterLocationButton = (Button) findViewById(R.id.enterLocationButton );
        Button takePictureButton = (Button) findViewById(R.id.takePictureButton );
        Button sendButton = (Button) findViewById(R.id.sendButton);

        enterAgeButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                MainActivity.this.handleEnterAgeButtonClick((Button) view);
            }
        });

        enterHumanButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                MainActivity.this.handleEnterHumanButtonClick((Button) view);
            }
        });

        enterOpenEndButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                MainActivity.this.handleEnterOpenEndButtonClick((Button) view);
            }
        });

        enterLocationButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                MainActivity.this.handleEnterLocationButtonClick((Button) view);
            }
        });

        takePictureButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                MainActivity.this.handleTakePictureButtonClick((Button) view);
            }
        });

        sendButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                MainActivity.this.handleSendButtonClick((Button) view);
            }
        });
    }

    private void handleEnterOpenEndButtonClick(Button view) {
        Intent intent = new Intent(this,OpenEndActivity.class);
        startActivityForResult(intent,SHOW_OPEN_END_REQUEST_CODE);
    }

    private void handleEnterHumanButtonClick(Button view) {
        Intent intent = new Intent(this,HumanActivity.class);
        startActivityForResult(intent,SHOW_HUMAN_REQUEST_CODE);
    }

    private void handleEnterLocationButtonClick(Button view) {
        Intent intent = new Intent(this, LocationActivity.class);//the type info of hat we want to display
        startActivityForResult(intent,SHOW_LOCATION_REQUEST_CODE);
    }

    private void handleTakePictureButtonClick(Button theButton) {
        Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        startActivityForResult(intent, TAKE_PICTURE_REQUEST_CODE);
    }

    private void handleEnterAgeButtonClick(Button theButton) {
        Intent intent = new Intent(this, AgeActivity.class);//the type info of hat we want to display
        startActivityForResult(intent,SHOW_AGE_REQUEST_CODE);
    }

    private void handleSendButtonClick(Button theButton) {
        try{
            ConnectivityManager connMgr = (ConnectivityManager)
                    getSystemService(Context.CONNECTIVITY_SERVICE);
            NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();
            if (networkInfo != null && networkInfo.isConnected()) {
                //post it
            } else {
                Toast.makeText(this, "Network not available", Toast.LENGTH_LONG).show();
            }

            HttpClient client = new DefaultHttpClient();
            HttpPost post = new HttpPost("http://ifdtc.azurewebsites.net/api/MobileData");
            List<NameValuePair> pairs = new ArrayList<NameValuePair>();
            pairs.add(new BasicNameValuePair("Age", age));
            pairs.add(new BasicNameValuePair("Human", human));
            pairs.add(new BasicNameValuePair("OpenEnd", openEnd));
            pairs.add(new BasicNameValuePair("Location", location));
            post.setEntity(new UrlEncodedFormEntity(pairs));

            HttpResponse response = client.execute(post);

            Toast.makeText(this, "Sent", Toast.LENGTH_LONG).show();
        }
        catch(ClientProtocolException ex){
            Toast.makeText(this, "ClientProtocolException", Toast.LENGTH_LONG).show();
        }
        catch(UnsupportedEncodingException ex) {
            Toast.makeText(this, "UnsupportedEncodingException", Toast.LENGTH_LONG).show();
        }
        catch(Exception ex){
            Toast.makeText(this, "Error sending data ", Toast.LENGTH_LONG).show();
        }
    }

    @Override//To add this, goto Code menu and type onActivityResult
    protected void onActivityResult(int requestCode, int resultCode, Intent resultIntent) {
        switch (requestCode) {
            case SHOW_AGE_REQUEST_CODE:
                handleAgeResult(resultCode, resultIntent);
                break;
            case SHOW_HUMAN_REQUEST_CODE:
                handleHumanResult(resultCode, resultIntent);
                break;
            case SHOW_OPEN_END_REQUEST_CODE:
                handleOpenEndResult(resultCode, resultIntent);
                break;
            case SHOW_LOCATION_REQUEST_CODE:
                handleLocationResult(resultCode, resultIntent);
                break;
            case TAKE_PICTURE_REQUEST_CODE:
                handleTakePictureResult(resultCode, resultIntent);
                break;
        }
    }

    private void handleOpenEndResult(int resultCode, Intent resultIntent) {
        if(resultCode == RESULT_OK)
        {
            openEnd = resultIntent.getStringExtra(OpenEndActivity.OPEN_END_EXTRA);
            updateTextDataSummary();
        }
    }

    private void handleHumanResult(int resultCode, Intent resultIntent) {
        if(resultCode == RESULT_OK)
        {
            human = resultIntent.getStringExtra(HumanActivity.HUMAN_EXTRA);
            updateTextDataSummary();
        }
    }

    private void handleAgeResult(int resultCode, Intent resultIntent) {
        if(resultCode == RESULT_OK)
        {
            age = resultIntent.getStringExtra(AgeActivity.AGE_EXTRA);
            updateTextDataSummary();
        }
    }

    private void handleLocationResult(int resultCode, Intent resultIntent) {
        if(resultCode == RESULT_OK)
        {
            location = resultIntent.getStringExtra(LocationActivity.LOCATION_EXTRA);
            updateTextDataSummary();
        }
    }

    private void handleTakePictureResult(int resultCode, Intent resultIntent) {
        if(resultCode == RESULT_OK)
        {
            Toast.makeText(this, "Photo taken and stored", Toast.LENGTH_LONG).show();
        }
        else {
            Toast.makeText(this, "User Canceled", Toast.LENGTH_LONG).show();
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        switch (id) {
            case R.id.action_settings:
                return true;
            case R.id.action_close:
                finish();
                break;
            default:
                return super.onOptionsItemSelected(item);
        }
        return true;
    }

    @Override
    protected void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        outState.putString(ageState, age);
        outState.putString(humanState, human);
        outState.putString(openEndState, openEnd);
        outState.putString(locationState, location);
    }

    private void updateTextDataSummary(){
        TextView textDataSummary =(TextView) findViewById(R.id.textDataSummary);
        String text = "";
        if(age != null)
            text += "Age: " + age + "\n";
        if(human != null)
            text += "Human: " + human + "\n";
        if(openEnd != null)
            text += "OpenEnd: " + openEnd + "\n";
        if(location != null)
            text += "Location: " + location + "\n";

        textDataSummary.setText(text);

    }
}

Java Source Code List

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