this is the image of my database我正在从事这个项目，在这里我正在显示数据库中的分数。当我从数据库中更改分数的值时，它会在那里更改，但是当我签入应用程序时，它会在那里显示更改，并且无论何时将点添加到通过奖励视频广告中，它都会在分数中显示，我们需要重新启动该应用程序可以查看添加的视频广告点。当我更改数据库中的值时，它永远不会在应用程序上显示，我认为它的解决方案很简单，而且我只是一个大人物，所以请在这方面帮助我。
public class Home_page extends AppCompatActivity implements RewardedVideoAdListener {
TextView score_text;
LinearLayout spin_button, logout_button, redeem_button, watch_video_buuton,share_id,rate_button;
;
private RewardedVideoAd mRewardedVideoAd;
int myIntValue;
DatabaseReference user_id_child;
String user_id;
DatabaseReference databaseReference;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home_page);
MobileAds.initialize(getApplicationContext(), "ca-app-pub-3940256099942544/5224354917");
databaseReference = FirebaseDatabase.getInstance().getReference().child("users");
FirebaseAuth mAuth = FirebaseAuth.getInstance();
user_id = mAuth.getCurrentUser().getUid();
user_id_child = databaseReference.child(user_id);
getSupportActionBar().setTitle("Earn Money");
// Admob video ads
MobileAds.initialize(getApplicationContext(), "ca-app-pub-3940256099942544/5224354917");
mRewardedVideoAd = MobileAds.getRewardedVideoAdInstance(this);
mRewardedVideoAd.setRewardedVideoAdListener(this);
loadRewardedVideoAd();
spin_button = (LinearLayout) findViewById(R.id.spin_linear_id);
redeem_button = (LinearLayout) findViewById(R.id.linear_redeem_id);
logout_button = (LinearLayout) findViewById(R.id.linear_logout_id);
watch_video_buuton = (LinearLayout) findViewById(R.id.linear_watch_video_id);
share_id = (LinearLayout)findViewById(R.id.linear_share_id);
score_text = (TextView) findViewById(R.id.wallet_text_score_id);
rate_button = (LinearLayout)findViewById(R.id.linear_rate_id);
SharedPreferences sp = getSharedPreferences("your_prefs", Activity.MODE_PRIVATE);
myIntValue = sp.getInt("your_int_key", 0);
rate_button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Uri uri = Uri.parse("https://www.instagram.com/dhruv__bhati/");
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent);
}
});
watch_video_buuton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (mRewardedVideoAd.isLoaded()) {
mRewardedVideoAd.show();
}
else {
loadRewardedVideoAd();
Toast.makeText(Home_page.this , "video ad not loaded ", Toast.LENGTH_LONG).show();
}
}
});
redeem_button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(Home_page.this, Redeem.class);
startActivity(intent);
overridePendingTransition(R.anim.slide_right, R.anim.slide_left);
}
});
logout_button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
diaglog();
}
});
spin_button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(Home_page.this, Spinwheel.class);
intent.putExtra("INT",myIntValue);
startActivity(intent);
overridePendingTransition(R.anim.slide_right, R.anim.slide_left);
}
});
share_id.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
share(view);
}
});
}
@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, menu);//Menu Resource, Menu
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.logout_id: {
logout();
}
return true;
}
return super.onOptionsItemSelected(item);
}
private void logout() {
FirebaseAuth.getInstance().signOut();
Intent intent = new Intent(Home_page.this, MainActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
}
@Override
public void finish() {
super.finish();
finish();
}
@Override
public void onRewardedVideoAdLoaded() {
}
@Override
public void onRewardedVideoAdOpened() {
}
@Override
public void onRewardedVideoStarted() {
}
@Override
public void onRewardedVideoAdClosed() {
loadRewardedVideoAd();
}
@Override
public void onRewarded(RewardItem rewardItem) {
Toast.makeText(Home_page.this,"Congratulations, you will get 1000 points next time you open the app ", Toast.LENGTH_LONG).show();
SharedPreferences sp = getSharedPreferences("your_prefs", Activity.MODE_PRIVATE);
SharedPreferences.Editor editor = sp.edit();
int n = myIntValue+1000;
editor.putInt("your_int_key", n);
editor.commit();
user_id_child.child("scores").setValue(+n);
watch_video_buuton.setEnabled(false);
final long startTime= Calendar.getInstance().getTime().getTime();
final Timer timer=new Timer();
TimerTask task=new TimerTask() {
@Override
public void run() {
long curentTime=Calendar.getInstance().getTime().getTime();
long elapsedTime=curentTime-startTime;
ToastTime(10*60*1000, elapsedTime);
if(curentTime-startTime>=10*60*1000){ //10 minutes in millisecond
timer.cancel();
watch_video_buuton.setEnabled(true);
}
}
};
timer.schedule(task, 500, 2000);
}
@Override
public void onRewardedVideoAdLeftApplication() {
}
@Override
public void onRewardedVideoAdFailedToLoad(int i) {
}
private void loadRewardedVideoAd() {
if(!mRewardedVideoAd.isLoaded()){
mRewardedVideoAd.loadAd("ca-app-pub-3940256099942544/5224354917",
new AdRequest.Builder().build());
}
}
@Override
public void onResume() {
mRewardedVideoAd.resume(this);
super.onResume();
}
@Override
public void onPause() {
mRewardedVideoAd.pause(this);
super.onPause();
}
@Override
public void onDestroy() {
mRewardedVideoAd.destroy(this);
super.onDestroy();
}
@Override
protected void onStart() {
super.onStart();
SharedPreferences sp = getSharedPreferences("your_prefs", Activity.MODE_PRIVATE);
myIntValue = sp.getInt("your_int_key", 0);
String s = String.valueOf(myIntValue);
score_text.setText(s);
loadRewardedVideoAd();
}
public void share(View view){
Intent sharingIntent = new Intent(android.content.Intent.ACTION_SEND);
sharingIntent.setType("text/plain");
sharingIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, "Earn Money");
sharingIntent.putExtra(android.content.Intent.EXTRA_TEXT, "Earn unlimited money by simple tasks"+" "+"https://play.google.com/store/apps/details?id=wheel.top.best.online.money.make.techyunk.com.earningwheel");
startActivity(Intent.createChooser(sharingIntent, "Share via"));
}
public void diaglog(){
final Dialog dialog = new Dialog(Home_page.this);
dialog.setContentView(R.layout.custom_logout);
Button no = (Button) dialog.findViewById(R.id.no_id);
Button yes = (Button)dialog.findViewById(R.id.yes_id);
// if button is clicked, close the custom dialog
no.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dialog.dismiss();
}
});
yes.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
logout();
}
});
dialog.show();
}
private void ToastTime(long totalTime, long elapsedTime) {
final int remainInSec = (int) (totalTime - elapsedTime) / 1000;
if (remainInSec > 0) {
final Activity activity = this;
runOnUiThread(new Runnable() {
@Override
public void run() {
Toast.makeText(activity, String.valueOf(remainInSec) + " seconds to enable video button", Toast.LENGTH_SHORT).show();
}
});
}
}
}
答案 0 :(得分：1)
正如我所见，您没有将任何侦听器附加到Firebase，就您而言，您需要使用addChildEventListener：ChildEventListener。
要小心，并且只能在onCreate方法中将此监听器称为一次。如果多次调用它，它将附加一个新的监听器，则您将有两个监听器和重复的数据
更新：
这是您从firebase获得的用户类：
public class User {
private String email;
private String name;
private String scores;
public User() {
}
public User(String email, String name, String scores) {
this.email = email;
this.name = name;
this.scores = scores;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getScores() {
return scores;
}
public void setScores(String scores) {
this.scores = scores;
}
}
现在让我们获取数据：
firebaseReference.addChildEventListener(new ChildEventListener() {
@Override
public void onChildAdded(DataSnapshot dataSnapshot, String s) {
// Here you can handle the new added items.
// if you added a new user you will see it here
User user = dataSnapshot.getValue(User.class);
// Now For example let's log the result
Log.d(TAG, "the user score is : " + user.getScore());
}
@Override
public void onChildChanged(DataSnapshot dataSnapshot, String s) {
// If you change the score this will appear here :
User user = dataSnapshot.getValue(User.class);
// Here is the new score you can use to update the score in the view
String score = user.getScore();
}
@Override
public void onChildRemoved(DataSnapshot dataSnapshot) {
}
@Override
public void onChildMoved(DataSnapshot dataSnapshot, String s) {
}
@Override
public void onCancelled(DatabaseError databaseError) {
}
});
现在尝试一下，您将得到它。