AbstractEditActivity.java

package at.abraxas.amarino.example.plugin.compass;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Spinner;
import at.abraxas.amarino.AmarinoIntent;

public abstract class AbstractEditActivity extends Activity {

	static final String KEY_VISUALIZER = "at.abraxas.amarino.example.plugin.compass.visualizer";
	
	protected int pluginId;
	
	private Button saveBtn;
	private Button discardBtn;
	private Spinner visualizer;
	private boolean cancelled = false;
	
	
	public abstract void init();
	public abstract void onSaveBtnClick(View v);
	public abstract void onCancelBtnClick(View v);
	

	private OnClickListener saveBtnClick = new OnClickListener() {
		
		public void onClick(View v) {
			onSaveBtnClick(v);
			finish();
		}
	};
	
	private OnClickListener cancelBtnClick = new OnClickListener() {
		
		public void onClick(View v) {
			cancelled = true;
			onCancelBtnClick(v);
			finish();
		}
	};
	
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.edit);
        
        visualizer =(Spinner)findViewById(R.id.visualizer);
        // init as text visualizer, this is the most common one
        visualizer.setSelection(PreferenceManager.getDefaultSharedPreferences(this).getInt(KEY_VISUALIZER, 0));
        
        Intent intent = getIntent();
        if (intent != null){
        	pluginId = intent.getIntExtra(AmarinoIntent.EXTRA_PLUGIN_ID, -1);
	        Log.d("TAG", "id: " + pluginId);
	        // we need to know the ID Amarino has assigned to this plugin
	        // in order to identify sent data
	        PreferenceManager.getDefaultSharedPreferences(AbstractEditActivity.this)
				.edit()
				.putInt(AmarinoIntent.EXTRA_PLUGIN_ID, pluginId)
				.commit();
        }

        saveBtn = (Button)findViewById(R.id.saveBtn);
        discardBtn = (Button)findViewById(R.id.discardBtn);

        saveBtn.setOnClickListener(saveBtnClick);
        discardBtn.setOnClickListener(cancelBtnClick);
        
        init();
        
    }

	@Override
	public void finish() {
		if (cancelled) {
			setResult(RESULT_CANCELED);
		}
		super.finish();
	}
	
	
	
	public void sendResult(int pluginNameRes, int descriptionRes, int serviceClassNameRes, float visualizerMin, float visualizerMax){
		sendResult(getString(pluginNameRes), getString(descriptionRes),
				getString(serviceClassNameRes), visualizerMin, visualizerMax);
	}
	
	public void sendResult(String pluginName, String description, String serviceClassName, float visualizerMin,
			float visualizerMax){
		
		final Intent returnIntent = new Intent();
		
		returnIntent.putExtra(AmarinoIntent.EXTRA_PLUGIN_NAME, pluginName);
		returnIntent.putExtra(AmarinoIntent.EXTRA_PLUGIN_DESC, description);
		returnIntent.putExtra(AmarinoIntent.EXTRA_PLUGIN_SERVICE_CLASS_NAME, serviceClassName);
		returnIntent.putExtra(AmarinoIntent.EXTRA_PLUGIN_ID, pluginId);	
		returnIntent.putExtra(AmarinoIntent.EXTRA_VISUALIZER_MIN_VALUE, visualizerMin);
		returnIntent.putExtra(AmarinoIntent.EXTRA_VISUALIZER_MAX_VALUE, visualizerMax);
		
		int selectedVisualizer = visualizer.getSelectedItemPosition();
		PreferenceManager.getDefaultSharedPreferences(this).edit().putInt(KEY_VISUALIZER, selectedVisualizer).commit();
		
		switch(selectedVisualizer){
			case 0:
				returnIntent.putExtra(AmarinoIntent.EXTRA_PLUGIN_VISUALIZER, AmarinoIntent.VISUALIZER_TEXT);
				break;
			case 1:
				returnIntent.putExtra(AmarinoIntent.EXTRA_PLUGIN_VISUALIZER, AmarinoIntent.VISUALIZER_GRAPH);
				break;
			case 2:
				returnIntent.putExtra(AmarinoIntent.EXTRA_PLUGIN_VISUALIZER, AmarinoIntent.VISUALIZER_BARS);
				break;
		}

		setResult(RESULT_OK, returnIntent);
	}
	
    
}