CheatActivity
import android.content.Context;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
public class CheatActivity extends AppCompatActivity {
private static final String EXTRA_ANSWER_IS_TRUE = "com.bignerdranch.android.geoquiz.answer_is_true";
private static final String EXTRA_ANSWER_SHOWN = "com.bignerdranch.android.geoquiz.answer_shown";
private boolean mAnswerisTrue;
private TextView mAnswerTextView;
private Button mShowAnswerButton;
public static Intent newIntent(Context packageContext,boolean answerisTrue){
Intent intent = new Intent(packageContext,CheatActivity.class);
intent.putExtra(EXTRA_ANSWER_IS_TRUE,answerisTrue);
return intent;
}
public static boolean wasAnswerShown(Intent intent){
return intent.getBooleanExtra(EXTRA_ANSWER_SHOWN,false);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_cheat);
mAnswerisTrue = getIntent().getBooleanExtra(EXTRA_ANSWER_IS_TRUE,false);
mAnswerTextView = (TextView) findViewById(R.id.answer_text_view);
mShowAnswerButton = (Button) findViewById(R.id.show_answer_button);
mShowAnswerButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if(mAnswerisTrue){
mAnswerTextView.setText(R.string.true_button);
}else{
mAnswerTextView.setText(R.string.false_button);
}
setAnswerShownResult(true);
}
});
}
private void setAnswerShownResult(boolean isAnswerShown){
Intent data = new Intent();
data.putExtra(EXTRA_ANSWER_SHOWN,isAnswerShown);
setResult(RESULT_OK,data);
}
}
Question
/**
* Created by 13178 on 2018-3-21.
*/
public class Question {
private int mTextResId;
private boolean mAnswerTrue;
public Question(int textResId ,boolean answerTrue){
mTextResId=textResId;
mAnswerTrue=answerTrue;
}
public int getTextResId() {
return mTextResId;
}
public void setTextResId(int textResId) {
mTextResId = textResId;
}
public boolean isAnswerTrue() {
return mAnswerTrue;
}
public void setAnswerTrue(boolean answerTrue) {
mAnswerTrue = answerTrue;
}
}
QuizActivity
import android.app.Activity;
import android.content.Intent;
import android.media.Image;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Gravity;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.TextView;
import android.widget.Toast;
public class QuizActivity extends AppCompatActivity {
private static final int REQUEST_CODE_CHEAT = 0;
private static final String TAG ="QuizActivity";
private static final String KEY_INDEX = "index";
private Button mTruebutton;
private Button mFalsebutton;
private Button mPrevbutton;
private Button mNextbutton;
private Button mCheatbutton;
private TextView mQuestionTextView;
private Question[] mQuestionBank = new Question[]{
new Question(R.string.question_australia,true),
new Question(R.string.qusetion_oceans,true),
new Question(R.string.qusetion_mideast,false),
new Question(R.string.question_africa,false),
new Question(R.string.question_americas,true),
new Question(R.string.question_asia,true)
};
private int mCurrentIndex = 0;
private boolean mIsCheater;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.d(TAG,"onCreate(Bundle) called");
setContentView(R.layout.activity_quiz);
if(savedInstanceState!=null){
mCurrentIndex = savedInstanceState.getInt(KEY_INDEX,0);
}
mQuestionTextView = (TextView) findViewById(R.id.queston_text_view);
//int queston = mQuestionBank[mCurrentIndex].getTextResId();
//mQuestionTextView.setText(queston);
mQuestionTextView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mCurrentIndex=(mCurrentIndex+1) % mQuestionBank.length;
//int question = mQuestionBank[mCurrentIndex].getTextResId();
//mQuestionTextView.setText(question);
updateQuestion();
}
});
mTruebutton = (Button) findViewById(R.id.true_button);
mTruebutton.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v){
//Toast toast=Toast.makeText(QuizActivity.this,
// R.string.correct_toast,
// Toast.LENGTH_SHORT);
//toast.setGravity(Gravity.TOP,0,170);
//toast.show();
//dose nothing yet ,but soon.
checkAnswer(true);
}
});
mFalsebutton = (Button) findViewById(R.id.false_button);
mFalsebutton.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v){
/*Toast toast=Toast.makeText(QuizActivity.this,
R.string.incorrect_toast,
Toast.LENGTH_SHORT);
toast.setGravity(Gravity.TOP,0,170);
toast.show();
//dose nothing yet ,but soon.*/
checkAnswer(false);
}
});
mPrevbutton =(Button) findViewById(R.id.prev_button);
mPrevbutton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mCurrentIndex=(Math.abs(mCurrentIndex-1)) % mQuestionBank.length;
//int question = mQuestionBank[mCurrentIndex].getTextResId();
//mQuestionTextView.setText(question);
updateQuestion();
}
});
mNextbutton =(Button) findViewById(R.id.next_button);
mNextbutton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mCurrentIndex=(mCurrentIndex+1) % mQuestionBank.length;
//int question = mQuestionBank[mCurrentIndex].getTextResId();
//mQuestionTextView.setText(question);
mIsCheater = false;
updateQuestion();
}
});
mCheatbutton = (Button) findViewById(R.id.cheat_button);
mCheatbutton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//Intent intent = new Intent(QuizActivity.this, CheatActivity.class);
boolean answerIsTrue = mQuestionBank[mCurrentIndex].isAnswerTrue();
Intent intent = CheatActivity.newIntent(QuizActivity.this,answerIsTrue);
startActivityForResult(intent,REQUEST_CODE_CHEAT);
//startActivity(intent);
}
});
updateQuestion();
}
@Override
protected void onActivityResult(int requestCode,int resultCode,Intent data){
if(resultCode != Activity.RESULT_OK){
return;
}
if(requestCode == REQUEST_CODE_CHEAT){
if(data==null){
return;
}
mIsCheater = CheatActivity.wasAnswerShown(data);
}
}
@Override
protected void onStart(){
super.onStart();
Log.d(TAG,"onStart() called");
}
@Override
protected void onResume(){
super.onResume();
Log.d(TAG,"onResume() called");
}
@Override
protected void onPause(){
super.onPause();
Log.d(TAG,"onPause() called");
}
@Override
public void onSaveInstanceState(Bundle savedInstanceState){
super.onSaveInstanceState(savedInstanceState);
Log.i(TAG,"onSaveInstanceState");
savedInstanceState.putInt(KEY_INDEX,mCurrentIndex);
}
@Override
protected void onStop(){
super.onStop();
Log.d(TAG,"onStop() called");
}
@Override
protected void onDestroy(){
super.onDestroy();
Log.d(TAG,"onDestroy() called");
}
private void updateQuestion(){
int question = mQuestionBank[mCurrentIndex].getTextResId();
mQuestionTextView.setText(question);
}
private void checkAnswer(boolean userPressedTrue){
boolean answerIsTrue = mQuestionBank[mCurrentIndex].isAnswerTrue();
int messageResId = 0;
if(mIsCheater){
messageResId = R.string.judgment_toast;
}else {
if(userPressedTrue==answerIsTrue){
messageResId=R.string.correct_toast;
} else{
messageResId=R.string.incorrect_toast;
}
}
Toast.makeText(this,messageResId,Toast.LENGTH_LONG).show();
}
}
activity_cheat.xml
activity_quiz.xml
activity_quiz.xml横屏