Programming in Android

[bboylalu]

Hello guys. I have a little problem with an application I'm developing. It used to work up to some point (no idea of what I added that it made it stop working) until it stared FC-ing. If anyone is willing to throw a short look over it and tell me where I'm mistaking, please do it. Also, I would like this thread to continue with apps developer's questions and answers. Thanks

package com.android.clapperboard;

import android.app.Activity;
import android.os.Bundle;
import android.graphics.Typeface;
import android.widget.TextView;
import android.widget.Button;
import android.widget.ImageView;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;

public class Clapperboard extends Activity {
	int state = 0;
	Button screws;
  	ImageView bar = (ImageView) findViewById(R.id.bar);
    Bitmap bar_down = BitmapFactory.decodeResource(getResources(), R.drawable.bar_down);
    Bitmap bar_up = BitmapFactory.decodeResource(getResources(), R.drawable.bar_up);
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
    	screws = (Button) findViewById(R.id.screws); 
        Typeface tf = Typeface.createFromAsset(getAssets(), "fonts/LCD #.ttf");
        TextView tv = (TextView) findViewById(R.id.lcd_font);
        tv.setTypeface(tf);
    }
    
    public void rotate() {
    	switch (state) {
    	case 0:
    		bar.setImageBitmap(bar_down);
    		state = 1;
    	case 1:
    		bar.setImageBitmap(bar_up);
    		state = 0;
    	}
    }
}

[mik_os]

ImageView bar = (ImageView) findViewById(R.id.bar);

I think this is the problem. You are trying to get instance of object before it was created (setContentView(R.layout.main) ).

[bboylalu]

The problem was from main.xml, where I had

android:onClick="rotate"

and I thought to replace it with a listener in the java script and... it worked...
I still don't understand why...

[Dexter Fox]

Android is the market name for the Microsoft / Google collaboration. You use Google tools specifically for that niche. If you had in mind to make apps for handheld devices, then yeah, Java. If you want to learn Java, get the NetBeans IDE download with the JavaSE bundle. Add the JavaME plug-in. Java is a vast subject, start off with the Sun tutorials.

[mortiis]

Android is the market name for the Microsoft / Google collaboration.

What collaboration are you referring to?

[bboylalu]

Android is the market name for the Microsoft / Google collaboration. You use Google tools specifically for that niche. If you had in mind to make apps for handheld devices, then yeah, Java. If you want to learn Java, get the NetBeans IDE download with the JavaSE bundle. Add the JavaME plug-in. Java is a vast subject, start off with the Sun tutorials.

I am not a developer, I am just a geek wannabe. I just have a degree in programming from high school, in C++ (bulls***... what I learnt, I did it by myself), so there is absolutely no money or pride involved. I'm just trying to make an app which first of all I will use, then any of you might find it helpful (just saying). Again... what's Microsoft's part in here )?

[bboylalu]

Guys, I can't help you with Spica, but you might find the app I developed useful (at least I can share it with you ). You can download it from here. If you find it useful or find bugs etc., please let me know .

[Double]

Why does it only work on MDPI screens? if you just use dip unit's, it should scale pretty well.