我正在制作一个使用firebase实时数据库的测验应用程序。我想从realtimedatbase使用有问题的图像。我不知道如何在firebase实时数据库中存储图像。任何人都可以帮我解决这个问题吗？ que1的例子我想使用image1，用于que2-image2，等等..... 实时数据库-JSON文件
enter code here
public class MainActivity extends AppCompatActivity {
private TextView mScoreView;
private TextView mQuestion, mButtonChoice1, mButtonChoice2, mButtonChoice3, mButtonChoice4;
private Button next,prev;
private ImageView mimageView;
private int mScore=0;
private int mQuestionNumber=0;
private String mAnswer;
private Firebase mQuestionRef;
private Firebase mchoice1Ref;
private Firebase mchoice2Ref;
private Firebase mchoice3Ref;
private Firebase mchoice4Ref;
private Firebase mAnswerRef;
// private Firebase mImageRef;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
FirebaseDatabase.getInstance().setPersistenceEnabled(true);
Firebase.setAndroidContext(this);
mimageView=(ImageView)findViewById(R.id.image);
// Resources res = getResources(); /** from an Activity */
//mimageView.setImageDrawable(res.getDrawable(R.drawable.a));
mScoreView =(TextView)findViewById(R.id.score);
mQuestion=(TextView)findViewById(R.id.question);
mButtonChoice1=(TextView)findViewById(R.id.choice1);
mButtonChoice2=(TextView)findViewById(R.id.choice2);
mButtonChoice3=(TextView)findViewById(R.id.choice3);
mButtonChoice4=(TextView)findViewById(R.id.choice4);
next=(Button)findViewById(R.id.quit1);
prev=(Button)findViewById(R.id.quit);
updateQuestion();
next.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if(mQuestionNumber<99) {
mQuestionNumber++;
// mQuestion = mQuestionRef.getParent(mQuestionNumber);
updateQuestion();
}
else
{
next.setEnabled(false);
}
}
});
prev.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if(mQuestionNumber>0)
{
mQuestionNumber--;
// mQuestion = mQuestionRef.getParent(mQuestionNumber);
updateQuestion();
}
else{ prev.setEnabled(false);}
}
});
mButtonChoice1.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View view){
//My logic for Button goes in here
if (mButtonChoice1.getText().equals(mAnswer)){
mScore = mScore + 1;
updateScore(mScore);
// updateQuestion();
//This line of code is optiona
Toast.makeText(MainActivity .this, "correct", Toast.LENGTH_SHORT).show();
}else {
Toast.makeText(MainActivity.this, "wrong", Toast.LENGTH_SHORT).show();
// updateQuestion();
}
}
});
mButtonChoice2.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View view){
//My logic for Button goes in here
if (mButtonChoice2.getText().equals(mAnswer)){
mScore = mScore + 1;
updateScore(mScore);
// updateQuestion();
//This line of code is optiona
Toast.makeText( MainActivity.this, "correct", Toast.LENGTH_SHORT).show();
}else {
Toast.makeText(MainActivity.this, "wrong", Toast.LENGTH_SHORT).show();
// updateQuestion();
}
}
});
mButtonChoice3.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View view){
//My logic for Button goes in here
if (mButtonChoice3.getText().equals(mAnswer)){
mScore = mScore + 1;
updateScore(mScore);
// updateQuestion();
//This line of code is optiona
Toast.makeText( MainActivity.this, "correct", Toast.LENGTH_SHORT).show();
}else {
Toast.makeText(MainActivity.this, "wrong", Toast.LENGTH_SHORT).show();
// updateQuestion();
}
}
});
mButtonChoice4.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View view){
//My logic for Button goes in here
if (mButtonChoice4.getText().equals(mAnswer)){
mScore = mScore + 1;
updateScore(mScore);
// updateQuestion();
//This line of code is optiona
Toast.makeText( MainActivity.this, "correct", Toast.LENGTH_SHORT).show();
}else {
Toast.makeText(MainActivity.this, "wrong", Toast.LENGTH_SHORT).show();
// updateQuestion();
}
}
});
}
private void updateScore(int score)
{
mScoreView.setText("" +mScore);
}
public void updateQuestion()
{ mQuestionRef = new Firebase("URLHere/" + mQuestionNumber + "/question");
mQuestionRef.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
String question = dataSnapshot.getValue(String.class);
mQuestion.setText(question);
}
@Override
public void onCancelled(FirebaseError firebaseError) {
}
});
if ( mQuestionNumber==1)
{
// mimageView = new Firebase("gs://maths-quiz-cb006.appspot.com");
String url ="URL HERE";
// Glide.with
}
// else{next.setEnabled(false);}
}
}
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_quiz"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="16dp"
android:paddingLeft="16dp"
android:paddingRight="16dp"
android:background="#79b6ff"
android:paddingTop="16dp"
android:orientation="vertical"
tools:context=".MainActivity">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Score"
android:textSize="16sp"
android:layout_alignParentLeft="true"
android:id="@+id/score_text"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/score"
android:layout_alignParentRight="true"
android:text="0"
android:textSize="20sp"/>
<ImageView
android:id="@+id/image"
android:layout_width="match_parent"
android:layout_height="200dp"
android:layout_below="@+id/question"/>
<TextView
android:layout_below="@+id/score"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Q"
android:textSize="20sp"
android:padding="8dp"
android:textColor="#000000"
android:layout_marginBottom="3dp"
</ScrollView>`