Templates

Activity

This is a simple Activity which has an input field and a button. When the button is pressed the value is stored as a "preference" and the Activity is closed. The input field and its labels and the button are defined in one or more xml files in res/layout.

package com.organization.package;

import android.app.Activity;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

public class purposeActivity extends Activity {
	private static final String TAG = purposeActivity.class.getSimpleName();

	private static final String PREFS = "packageConfig";
	static SharedPreferences preferences = null;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.purpose);
		Log.i(TAG, "onCreate ");
		preferences = getSharedPreferences(PREFS,MODE_PRIVATE);

		final Button button = (Button) findViewById(R.id.submitButton);
		button.setText("Submit");

		button.setOnClickListener(new View.OnClickListener() {
			public void onClick(View v) {
				SharedPreferences.Editor editor = preferences.edit();
				Log.i(TAG, "Purpose button clicked.");
//				Perform action on click
				String myPurpose = new String(((EditText) findViewById(R.id.purpose)).getText().toString().trim());
				editor.putString("Purpose", myPurpose );
				editor.commit();
				finish();
			}
		});
	}

	@Override
	public void onResume() {
		super.onResume();
		Log.i(TAG, "at onResume");
		TextView t;
		t = (TextView) findViewById(R.id.topLine);
		t.setText("Package by Organization" );
	}

	@Override
	public void onDestroy() {
		super.onDestroy();
	}

}

Service

This is a sevice that does nothing but write log entries. A good use for a started might be something time consuming such as getting a GPS fix.

package com.organization.package;

import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.util.Log;

public class purposeService extends Service {
	private static final String TAG = purposeService.class.getSimpleName() ;

	/* This is mandatory, and not needed for a started service. */
	@Override
	public IBinder onBind(Intent intent) { return null; }

	@Override
	public void onCreate() {
		Log.v(TAG, "onCreate");
		super.onCreate();
		/* This will be called repeatedly. */
		/* For one time initialization -- 
			declare initialized items static,
			and verify that they have not been 
			initialized before initializing them. */
	}

	@Override
	public void onDestroy() {
		Log.v(TAG, "onDestroy");
		super.onDestroy();
		/* put your toys away */
	}

	@Override
	public void onStart(Intent intent, int startId) {
		Log.i(TAG, "onStart");
		super.onStart(intent, startId);
		/* This is where the most useful code goes */
	}
}

Other