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MIT License
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package ymc.ch.bearingexample; /* w w w . j a va2 s .c o m*/ import android.app.Activity; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import android.widget.TextView; public class BearingDisplay extends Activity implements BearingToNorthProvider.ChangeEventListener { private TextView mTxtBearing; private BearingToNorthProvider mBearingProvider; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_bearing_display); mTxtBearing = (TextView) findViewById(R.id.txtBearing); mBearingProvider = new BearingToNorthProvider(this); mBearingProvider.setChangeEventListener(this); } @Override protected void onResume() { super.onResume(); mBearingProvider.start(); } @Override protected void onPause() { super.onPause(); mBearingProvider.stop(); } @Override public void onBearingChanged(double bearing) { mTxtBearing.setText(String.format("Current Bearing: %f", bearing)); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.bearing_display, 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(); if (id == R.id.action_settings) { return true; } return super.onOptionsItemSelected(item); } }