I'm now on developing geolocation APP but updated google API(Google MAP v2) is really confusing.
The problem is: When I clicking the button1(see the code), it successfully shows the map.
However, when I clicking the back button on the Android device, it immediately kills the APP rather than close the setContentView(R.layout.mapview);
So I would like to show the initial display after clicking the back
button rather than kill the APP.
Please help:
MainActivity.java
public class MainActivity extends FragmentActivity {
LocationManager mLocMan;
String mProvider;
Location location;
Context context;
//double latitude, longitude;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mLocMan = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
mProvider = mLocMan.getBestProvider(new Criteria(), true);
LocationListener mListener = new Geocoord();
mLocMan.requestLocationUpdates(mLocMan.GPS_PROVIDER, 6000, 10, mListener);
//Button 0
final Button btn = (Button)findViewById(R.id.btn);
btn.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
//1st site
try{
EditText mgrs_site1 = (EditText)findViewById(R.id.editText1);
String site1 = mgrs_site1.getText().toString().toUpperCase();
............
}catch(Exception e){
Toast.makeText(MainActivity.this, "Please input valid Coordination!", Toast.LENGTH_SHORT).show();}//ends try-catch
}
}); //ends button0
//Button 1
Button btn1 = (Button)findViewById(R.id.btn1);
btn1.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
btn.performClick();
setContentView(R.layout.mapview);
//Intent intent = new Intent(MainActivity.this, MapView.class);
//startActivity(intent);
}//ends onClick
});
}//ends onCreate
}//ends Activity
Define an overriding function in your MainActivity
.
@Override
public void onBackPressed() {
setContentView(R.layout.activity_main);
}
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