我正在尝试构建我的第一个应用程序，其中有厨师的名字，然后将开启选择VEG / NONVEG的常见活动。然后根据他们选择的选择和厨师，它将引导他们进入菜单。我好像不知道我哪里出错了。
MainActivity.java
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
public class MainActivity extends Activity implements View.OnClickListener {
Button sanjeev, vikas, tarla;
Bundle bundle;
Intent intent;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
sanjeev= (Button) findViewById(R.id.button1);
vikas= (Button) findViewById(R.id.button2);
tarla= (Button) findViewById(R.id.button3);
sanjeev.setOnClickListener(this);
vikas.setOnClickListener(this);
tarla.setOnClickListener(this);
}
@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();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public void onClick(View v) {
if (v==sanjeev){
Toast.makeText(getApplicationContext(),"Sanjeev was clicked", Toast.LENGTH_SHORT).show();
intent=new Intent(this,Choice.class);
intent.putExtra("Veg1", "SanjeevStarter");
intent.putExtra("NVeg1","SanjeevNStarter");
startActivity(intent);
}
else if (v==vikas){
Toast.makeText(getApplicationContext(),"Vikas was clicked", Toast.LENGTH_SHORT).show();
intent=new Intent(this, Choice.class);
intent.putExtra("Veg2","VikasVeg");
intent.putExtra("NVeg2","VikasNVeg");
startActivity(intent);
}
else if (v==tarla){
Toast.makeText(getApplicationContext(),"Tarla was clicked", Toast.LENGTH_SHORT).show();
intent=new Intent(this,Choice.class);
intent.putExtra("Veg3", "TarlaVeg");
intent.putExtra("NVeg3","TarlaNVeg");
startActivity(intent);
}
}
}
Choice.java
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
public class Choice extends Activity implements View.OnClickListener{
Button button1, button2;
Intent i;
Bundle extras;
String veg, nveg, vveg, vnveg, tveg, tnveg;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.choice);
button1= (Button) findViewById(R.id.button1);
button2= (Button) findViewById(R.id.button2);
button1.setOnClickListener(this);
button2.setOnClickListener(this);
extras=getIntent().getExtras();
if (extras!=null){
if (extras.containsKey("Veg1")&& extras.containsKey("NVeg1")){
veg=extras.getString("Veg1");
nveg=extras.getString("NVeg1");
}
else if (extras.containsKey("Veg2") && extras.containsKey("NVeg2")){
vveg=extras.getString("Veg2");
vnveg=extras.getString("NVeg2");
}
else if (extras.containsKey("Veg3") && extras.containsKey("NVeg3")){
tveg=extras.getString("Veg3");
tnveg=extras.getString("NVeg3");
}
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_sanjeev_1, 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();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public void onClick(View v) {
try {
if (v == button1) {
if (veg.equals("SanjeevStarter")) {
Toast.makeText(this, "Veg Was Clicked", Toast.LENGTH_SHORT).show();
i = new Intent(Choice.this, SanjeevVegCourse.class);
startActivity(i);
} else if (vveg.equals("VikasVeg")) {
Toast.makeText(this, "Veg Was Clicked", Toast.LENGTH_SHORT).show();
i = new Intent(Choice.this, VikasVegCourse.class);
startActivity(i);
} else if (tveg.equals("TarlaVeg")) {
Toast.makeText(this, "Veg Was Clicked", Toast.LENGTH_SHORT).show();
i = new Intent(Choice.this, TarlaVegcourse.class);
startActivity(i);
}
} else if (v == button2) {
if (nveg.equals("SanjeevNStarter")) {
Toast.makeText(this, "Non-Veg Was Clicked", Toast.LENGTH_SHORT).show();
i = new Intent(Choice.this, SanjeevNVCourse.class);
startActivity(i);
} else if (vnveg.equals("VikasNVeg")) {
Toast.makeText(this, "Non-Veg Was Clicked", Toast.LENGTH_SHORT).show();
i = new Intent(Choice.this, VikasNVcourse.class);
startActivity(i);
} else if (tnveg.equals("TarlaNVeg")) {
Toast.makeText(this, "Still working on Non-Veg Menu :-)", Toast.LENGTH_SHORT).show();
}
}
}
catch (Exception e){
Toast.makeText(getApplicationContext(),"Fix the error MADARBHAGAT", Toast.LENGTH_SHORT).show();
e.printStackTrace();
}
}
}