起初我认为这是Parse的一个问题，但后来我开始记录我发送到云端的变量的值。由于某种原因，该值为0.我有一个导引条，当条形滑动时，它会更新变量的值。我有一个日志声明，显示值已更改，因此我知道在按钮单击之前我的代码没有任何问题。
然后点击一个按钮，该变量的值将被发送到Parse。我在点击按钮时记录了值，变量包含值0.我不知道为什么会发生这种情况。我知道变量在单击按钮之前有一个值。然后以某种方式操纵价值
KEYS *
1) ":1:asdf"
2) ":1:django.contrib.sessions.cacheg2l0bo9z88z8bn4q2ep0andjgo8zrzzk"
修改
我有两个导向条，它们正在更新两个不同的变量。其中一个变量将始终具有值，而另一个变量的值为0.每次单击按钮时，值0都会在每个变量之间交替变换。这是我以前从未见过的事情
修改
public class SettingsScreen extends AppCompatActivity {
... //////// ommitted code /////
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_settings_screen);
ButterKnife.bind(this);
Intent intent = getIntent();
isLoggedIn = intent.getBooleanExtra("currentUser", false);
if (isLoggedIn) {
userIsLoggedIn();
} else {
... //////// ommitted code /////
}
applyButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (isLoggedIn) {
mUser.put("WORK", mDesiredWorkTime);
mUser.put("REST", mDesiredRestTime);
mUser.put(ACCESSEDSETTINGS, true); //when user clicks apply, ACCESSEDSETTINGS will be true and so the if statement in the method below wont run
mUser.saveInBackground();
Log.d(TAG, "putting desired user settings into database");
Log.d(TAG, "desired work time: " + mDesiredWorkTime); // SOMETIMES THIS IS ZERO???
Log.d(TAG, "desired rest time " + mDesiredRestTime); // AND SOMETIMES THIS IS ZERO???
}
Intent intent = new Intent(SettingsScreen.this, MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK|Intent.FLAG_ACTIVITY_CLEAR_TOP);
intent.putExtra(LOCALWORK, mDesiredWorkTime);
intent.putExtra(LOCALREST, mDesiredRestTime);
startActivity(intent);
}
});
}
public void userIsLoggedIn() {
mUser = ParseUser.getCurrentUser();
mObjectId = mUser.getObjectId();
registeredUserAccessedSettings = mUser.getBoolean(ACCESSEDSETTINGS);
Log.d(TAG, "Has user accessed settings before? " + registeredUserAccessedSettings);
if (!registeredUserAccessedSettings) { //this code will run first time user accesses settings with parse
workFromDatabase = 25;
restFromDatabase = 5;
Log.d(TAG, "launched settings with account for first time");
} else {
workFromDatabase = mUser.getInt("WORK");
restFromDatabase = mUser.getInt("REST");
workText.setText("Current: " + workFromDatabase + " minutes");
restText.setText("Current: " + restFromDatabase + " minutes");
Log.d(TAG, "got user settings from database");
Log.d(TAG, "desired work time: " + workFromDatabase);
Log.d(TAG, "desired rest time " + restFromDatabase);
}
workBar.setMax(MAX_WORK - MIN_WORK);
workBar.setProgress(workFromDatabase - MIN_WORK);
workBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
mDesiredWorkTime = MIN_WORK + progress;
workText.setText("Current: " + mDesiredWorkTime + " minutes");
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
restBar.setMax(MAX_REST - MIN_REST);
restBar.setProgress(restFromDatabase - MIN_REST);
restBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
mDesiredRestTime = MIN_REST + progress;
restText.setText("Current: " + mDesiredRestTime + " minutes");
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
}
}
}
将此位置放在if else块之前，现在这些变量将始终保持值