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BOOK: Professional Android 4 Application Development
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Old September 18th, 2012, 02:31 PM
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Default Earthquake chapter 7 part 2

Hello,

Can you guys get this to work as according to the book? I mean: with API 4 and 15?

I got it work after aa lot of time and then i ended up with the support library and a FragmentActivity instead of an Activity in Earthquake.java. Which... isn't the point of the exercise?

I thought the point of this exercise was to get it to work without using a support library. Can anybody help me getting it to work according to today's standard.

Here's my full version of the class:
Code:
package com.paad.earthquake;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Build;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.view.Menu;
import android.view.MenuItem;

public class Earthquake extends FragmentActivity {
	static final private int MENU_PREFERENCES = Menu.FIRST + 1;
	static final private int MENU_UPDATE = Menu.FIRST + 2;
	private static final int SHOW_PREFERENCES = 1;

	public int minimumMagnitude = 0;
	public boolean autoUpdateChecked = false;
	public int updateFreq = 0;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);

		updateFromPreferences();
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		super.onCreateOptionsMenu(menu);

		menu.add(0, MENU_PREFERENCES, Menu.NONE, R.string.menu_preferences);

		return true;
	}

	public boolean onOptionsItemSelected(MenuItem item) {
		super.onOptionsItemSelected(item);
		switch (item.getItemId()) {

		case MENU_PREFERENCES:
			Class c = Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB ? PreferencesActivity.class
					: FragmentPreferences.class;
			Intent i = new Intent(this, c);

			startActivityForResult(i, SHOW_PREFERENCES);
			return true;

		}
		return false;
	}

	@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		super.onActivityResult(requestCode, resultCode, data);
		if (resultCode == Activity.RESULT_OK)
			updateFromPreferences();

		FragmentManager fm = getSupportFragmentManager();
		final EarthquakeListFragment earthquakeList = (EarthquakeListFragment) fm
				.findFragmentById(R.id.EarthquakeListFragment);

		Thread t = new Thread(new Runnable() {

			public void run() {
				earthquakeList.refreshEarthquakes();
			}
		});
		t.start();
	}

	private void updateFromPreferences() {
		Context context = getApplicationContext();
		SharedPreferences prefs = PreferenceManager
				.getDefaultSharedPreferences(context);

		minimumMagnitude = Integer.parseInt(prefs.getString(
				PreferencesActivity.PREF_MIN_MAG, "3"));
		updateFreq = Integer.parseInt(prefs.getString(
				PreferencesActivity.PREF_UPDATE_FREQ, "60"));

		autoUpdateChecked = prefs.getBoolean(
				PreferencesActivity.PREF_AUTO_UPDATE, false);
	}
}
Thanks in advance for any help/guidance with this problem!
 
Old October 31st, 2012, 05:54 PM
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Default

When you say it doesn't work, what exactly do you mean? How far do you get? Is an exception being thrown? The version I just built works.





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