我已经创建了多个概念活动供不同的数据库访问，以减少我需要一个解决方案来解决创建多个活动到单个活动的问题？
IN ConceptActivity.Java
package com.example.akshi.ictlearningengeducation;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.content.Intent;
import android.support.v4.app.NavUtils;
import android.util.Log;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.TextView;
import com.example.akshi.ictlearningengeducation.db.DBAdapter;
import com.example.akshi.ictlearningengeducation.model.Question;
import java.util.ArrayList;
import java.util.List;
public class ConceptActivity extends AppCompatActivity {
private List<Question> questionsList;
private Question currentQuestion;
private TextView txtQuestion,tvNoOfQs;
private RadioButton rbtnA, rbtnB, rbtnC,rbtnD;
private Button btnNext;
private int obtainedScore=0;
private int questionId=0;
private int answeredQsNo=0;
ArrayList<String> myAnsList;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_concept);
//Initialize the view
init();
//Initialize the database
final DBAdapter dbAdapter=new DBAdapter(this);
questionsList= dbAdapter.getAllQuestions();
currentQuestion=questionsList.get(questionId);
//Set question
setQuestionsView();
//Check and Next
btnNext.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
RadioGroup grp=(RadioGroup)findViewById(R.id.radioGroup1);
RadioButton answer=(RadioButton)findViewById(grp.getCheckedRadioButtonId());
Log.e("Answer ID", "Selected Positioned value - "+grp.getCheckedRadioButtonId());
if(answer!=null){
Log.e("Answer", currentQuestion.getANSWER() + " -- " + answer.getText());
//Add answer to the list
myAnsList.add(""+answer.getText());
if(currentQuestion.getANSWER().equals(answer.getText())){
obtainedScore++;
Log.e("comments", "Correct Answer");
Log.d("score", "Obtained score " + obtainedScore);
}else{
Log.e("comments", "Wrong Answer");
}
if(questionId<dbAdapter.rowCount()){
currentQuestion=questionsList.get(questionId);
setQuestionsView();
}else{
Intent intent = new Intent(ConceptActivity.this, ResultActivity.class);
Bundle b = new Bundle();
b.putInt("score", obtainedScore);
b.putInt("totalQs", questionsList.size());
b.putStringArrayList("myAnsList", myAnsList);
intent.putExtras(b);
startActivity(intent);
finish();
}
}else{
Log.e("comments", "No Answer");
}
//Need to clear the checked item id
grp.clearCheck();
}//end onClick Method
});
}
public void init(){
tvNoOfQs=(TextView)findViewById(R.id.tvNumberOfQuestions);
txtQuestion=(TextView)findViewById(R.id.tvQuestion);
rbtnA=(RadioButton)findViewById(R.id.radio0);
rbtnB=(RadioButton)findViewById(R.id.radio1);
rbtnC=(RadioButton)findViewById(R.id.radio2);
rbtnD=(RadioButton)findViewById(R.id.radio3);
btnNext=(Button)findViewById(R.id.btnNext);
myAnsList = new ArrayList<String>();
}
private void setQuestionsView()
{
rbtnA.setChecked(false);
rbtnB.setChecked(false);
rbtnC.setChecked(false);
rbtnD.setChecked(false);
answeredQsNo=questionId+1;
tvNoOfQs.setText("Questions "+answeredQsNo+" of "+questionsList.size());
txtQuestion.setText(currentQuestion.getQUESTION());
rbtnA.setText(currentQuestion.getOptionA());
rbtnB.setText(currentQuestion.getOptionB());
rbtnC.setText(currentQuestion.getOptionC());
rbtnD.setText(currentQuestion.getOptionD());
questionId++;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
// Respond to the action bar's Up/Home button
case android.R.id.home:
NavUtils.navigateUpFromSameTask(this);
return true;
}
return super.onOptionsItemSelected(item);
}
}
测验主要活动代码
package com.example.akshi.ictlearningengeducation;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.support.design.widget.NavigationView;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Button;
import com.google.android.gms.ads.AdRequest;
import com.google.android.gms.ads.AdView;
public class quizass1 extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_quizass1);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
Button btnStart=(Button) findViewById(R.id.btnStart);
btnStart.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent conceptIntent=new Intent(quizass1.this,ConceptActivity.class);
startActivity(conceptIntent);
}
});
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
}
@Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
return true;
}
@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.nav_home) {
Intent conceptIntent=new Intent(quizass1.this,MainActivity.class);
startActivity(conceptIntent);
}
else if (id == R.id.nav_quizone) {
Intent conceptIntent=new Intent(quizass1.this,ConceptActivity.class);
startActivity(conceptIntent);
}
else if (id == R.id.nav_quiztwo) {
Intent conceptIntent=new Intent( quizass1.this,ConceptActivity1.class );
startActivity(conceptIntent);
}
else if (id == R.id.nav_quizthree) {
Intent conceptIntent=new Intent( quizass1.this,ConceptActivity2.class );
startActivity(conceptIntent);
}
else if (id == R.id.nav_quizfour) {
Intent conceptIntent=new Intent( quizass1.this,ConceptActivity3.class );
startActivity(conceptIntent);
}
else if (id == R.id.nav_quiz5) {
Intent conceptIntent=new Intent(quizass1.this,ConceptActivity4.class);
startActivity(conceptIntent);
}
else if (id == R.id.nav_quiz6) {
Intent conceptIntent=new Intent( quizass1.this,ConceptActivity5.class );
startActivity(conceptIntent);
}
else if (id == R.id.nav_quiz7) {
Intent conceptIntent=new Intent( quizass1.this,ConceptActivity6.class );
startActivity(conceptIntent);
}
else if (id == R.id.nav_quiz8) {
Intent conceptIntent=new Intent( quizass1.this,ConceptActivity7.class );
startActivity(conceptIntent);
}
else if (id == R.id.nav_quiz9) {
Intent conceptIntent=new Intent(quizass1.this,ConceptActivity8.class);
startActivity(conceptIntent);
}
else if (id == R.id.nav_quiz10) {
Intent conceptIntent=new Intent( quizass1.this,ConceptActivity9.class );
startActivity(conceptIntent);
}
else if (id == R.id.nav_quiz11) {
Intent conceptIntent=new Intent( quizass1.this,ConceptActivity10.class );
startActivity(conceptIntent);
}
else if (id == R.id.nav_quiz12) {
Intent conceptIntent=new Intent( quizass1.this,ConceptActivity11.class );
startActivity(conceptIntent);
}
else if (id == R.id.nav_quiz13) {
Intent conceptIntent=new Intent(quizass1.this,ConceptActivity12.class);
startActivity(conceptIntent);
}
else if (id == R.id.nav_quiz14) {
Intent conceptIntent=new Intent( quizass1.this,ConceptActivity13.class );
startActivity(conceptIntent);
}
else if (id == R.id.nav_quiz15) {
Intent conceptIntent=new Intent( quizass1.this,ConceptActivity14.class );
startActivity(conceptIntent);
}
else if (id == R.id.nav_quiz16) {
Intent conceptIntent=new Intent( quizass1.this,ConceptActivity15.class );
startActivity(conceptIntent);
}
else if (id == R.id.nav_cse) {
Intent conceptIntent=new Intent(quizass1.this,ConceptActivity16.class);
startActivity(conceptIntent);
}
else if (id == R.id.nav_ece) {
Intent conceptIntent=new Intent( quizass1.this,ConceptActivity17.class );
startActivity(conceptIntent);
}
else if (id == R.id.nav_eee) {
Intent conceptIntent=new Intent( quizass1.this,ConceptActivity18.class );
startActivity(conceptIntent);
}
else if (id == R.id.nav_mech) {
Intent conceptIntent=new Intent( quizass1.this,ConceptActivity19.class );
startActivity(conceptIntent);
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
}
如何通过添加db代码以移动项目单击来减少将多个活动创建为单个活动
在activity.java 中： 如何在此条件下使用意图去不同的数据库适配器-DBAdapters
答案 0 :(得分：0)
您可以像这样使用FragmentPageAdapter：
besoins.stream().forEach(besoin ->在Fragmnet类中，您可以使用不同的加载程序从数据库中获取值：
for (Besoin besoin : besoins)