I am extremely new when it comes to Android Studio but have managed to put together 2 activities which work fine under separate apps, but when joined, it crashed when the MainActivity calls AddressActivity usingIntent and startActivity.
There is another problem which maybe related or may not be. When installing the app, there are NO permissions requested.
Here is my code:
AndroidManifest.xml
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COURSE_LOCATION" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity
android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".AddressActivity"
android:label="login">
</activity>
</application>
MainActivity.class
package crproductionsptyltd.login;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import static crproductionsptyltd.login.R.id.driverid;
import static crproductionsptyltd.login.R.id.login;
public class MainActivity extends Activity {
EditText driverid;
Button btnOk;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
// find View-elements
btnOk = (Button) findViewById(login);
// btnOk.setOnClickListener(this)
// create click listener
View.OnClickListener oclBtnOk = new View.OnClickListener() {
@Override
public void onClick(View v) {
// change text of the TextView (tvOut)
btnOk.setText("Logging IN.....");
Intent i = new Intent(MainActivity.this, AddressActivity.class);
i.putExtra("driver_id", driverid.getText().toString());
startActivity(i);
};
};
// assign click listener to the OK button (btnOK)
btnOk.setOnClickListener(oclBtnOk);
// startActivity(new Intent(MainActivity.this, AddressActivity.class));
// Intent i = new Intent(MainActivity.this, NewActivity.class);//
// startActivity(i);
};
}
AddressActivity.class
package crproductionsptyltd.login;
import java.io.IOException;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import java.util.Locale;
import android.app.Activity;
import android.content.Context;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.content.Intent;
public class AddressActivity extends Activity {
/**
* Called when the activity is first created.
*/
String lat = "", lon = "";
TextView tvView;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_gps);
tvView = (TextView) findViewById(R.id.tvView);
Intent intent = getIntent();
String driverid = intent.getStringExtra("driver_id");
tvView.setText("Your Driver ID is: " + driverid);
Button btnLocation = (Button) findViewById(R.id.btnLocation);
btnLocation.setOnClickListener(new OnClickListener() {
public void onClick(View arg0) {
// Acquire a reference to the system Location Manager
LocationManager locationManager = (LocationManager) AddressActivity.this.getSystemService(Context.LOCATION_SERVICE);
// Define a listener that responds to location updates
LocationListener locationListener = new LocationListener() {
public void onLocationChanged(Location location) {
// Called when a new location is found by the network location provider.
lat = Double.toString(location.getLatitude());
lon = Double.toString(location.getLongitude());
TextView tv = (TextView) findViewById(R.id.txtLoc);
tv.setText("Your Location is:" + lat + "--" + lon);
}
public void onStatusChanged(String provider, int status, Bundle extras) {
}
public void onProviderEnabled(String provider) {
}
public void onProviderDisabled(String provider) {
}
};
// Register the listener with the Location Manager to receive location updates
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);
}
});
Button btnSend = (Button) findViewById(R.id.btnSend);
btnSend.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
postData(lat, lon);
}
});
Button btnAdd = (Button) findViewById(R.id.btnAddress);
btnAdd.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
TextView tv = (TextView) findViewById(R.id.txtAddress);
tv.setText(GetAddress(lat, lon));
}
});
}
public void postData(String la, String lo) {
//URL url = new URL("https://www.autoflora.net/driver/gps.php?Driver_ID=877&latlong=" + lat + "*" + lon);
int TIMEOUT_VALUE = 15000;
try{
URL myUrl = new URL("https://www.autoflora.net/driver/gps.php?Driver_ID=877&latlong=" + lat + "*" + lon);
URLConnection connection = myUrl.openConnection();
connection.setConnectTimeout(TIMEOUT_VALUE);
connection.connect();
} catch (Exception e) {
}
}
public String GetAddress(String lat, String lon)
{
Geocoder geocoder = new Geocoder(this, Locale.ENGLISH);
String ret = "";
try {
List<Address> addresses = geocoder.getFromLocation(Double.parseDouble(lat), Double.parseDouble(lon), 1);
if(addresses != null) {
Address returnedAddress = addresses.get(0);
StringBuilder strReturnedAddress = new StringBuilder("Address:\n");
for(int i=0; i<returnedAddress.getMaxAddressLineIndex(); i++) {
strReturnedAddress.append(returnedAddress.getAddressLine(i)).append("\n");
}
ret = strReturnedAddress.toString();
}
else{
ret = "No Address returned!";
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
ret = "Can't get Address!";
}
return ret;
}
}
activity_login.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_horizontal"
android:orientation="vertical"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="crproductionsptyltd.login.LoginActivity">
<!-- Login progress -->
<ProgressBar
android:id="@+id/login_progress"
style="?android:attr/progressBarStyleLarge"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:visibility="gone" />
<ScrollView
android:id="@+id/login_form"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:id="@+id/email_login_form"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<android.support.design.widget.TextInputLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<AutoCompleteTextView
android:id="@+id/driverid"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Driver ID"
android:inputType="textEmailAddress"
android:maxLines="1"
android:singleLine="true" />
</android.support.design.widget.TextInputLayout>
<android.support.design.widget.TextInputLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
</android.support.design.widget.TextInputLayout>
<Button
android:id="@+id/login"
style="?android:textAppearanceSmall"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:text="Login"
android:textStyle="bold"
android:onClick="checkDriver" />
</LinearLayout>
</ScrollView>
</LinearLayout>
activity_gps.class
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/txtLoc"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView" />
<TextView
android:id="@+id/tvView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="20dp"
android:textSize="20sp">
</TextView>
<Button
android:id="@+id/btnLocation"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Get my Location" />
<Button
android:id="@+id/btnSend"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Send Location" />
<Button
android:id="@+id/btnAddress"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Try Get Street Address" />
<TextView
android:id="@+id/txtAddress"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Medium Text"
android:textAppearance="?android:attr/textAppearanceMedium" />
</LinearLayout>
