所以我有两个活动，一个包含所有元素，如RadioButtons，EditText等，另一个只包含TextViews，将在其上显示传递的数据。
这很好用，当我尝试保存这些数据时问题就开始了。在StackOwerflow上关注了许多YouTube教程和例子，但它不会保存数据。
无论如何，这是第一个活动的代码：
RadioGroup radioGrupa;
RadioButton imperial, metric;
EditText visinaCM, visinaFT, visinaINC, tezina , bodyfat, tdee, bmi, bmr, ffmi;
TextView rezultatTDEE, textVisinaCM, textVisinaFI, rezultatTezina, rezultatBMI, rezultatFFMI, rezultatBMR, rezultatBF;
Button spremiRezultat;
int onStartCount = 0;
public void radioStatistikeInputMetric(View view){
boolean checked = ((RadioButton) view).isChecked();
switch (view.getId()){
case R.id.radioStatistikeMetric:
if (checked)
// TU OVO SREDI!!!
//textVisinaCM.setVisibility(View.VISIBLE);
// visinaCM.setVisibility(View.VISIBLE);
//textVisinaFI.setVisibility(View.GONE);
//visinaFT.setVisibility(View.GONE);
// visinaINC.setVisibility(View.GONE);
spremiRezultat.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(getApplicationContext(), AppLayoutMain.class);
intent.putExtra("tdeeInput", tdee.getText().toString());
intent.putExtra("bodyFatInput", bodyfat.getText().toString());
intent.putExtra("tezinaMetricInput", tezina.getText().toString());
intent.putExtra("visinaMetricInput", visinaCM.getText().toString());
intent.putExtra("bmiInput", bmi.getText().toString());
intent.putExtra("bmrInput", bmr.getText().toString());
intent.putExtra("ffmiInput", ffmi.getText().toString());
startActivity(intent);
}
});
break;
}
}
public void radioStatistikeInputImperial(View view){
boolean checked = ((RadioButton) view).isChecked();
switch (view.getId()){
case R.id.radioStatistikeImperial:
if (checked)
//textVisinaCM.setVisibility(View.GONE);
// visinaCM.setVisibility(View.GONE);
// textVisinaFI.setVisibility(View.VISIBLE);
// visinaFT.setVisibility(View.VISIBLE);
// visinaINC.setVisibility(View.VISIBLE);
spremiRezultat.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(getApplicationContext(), AppLayoutMain.class);
intent.putExtra("tdeeInput", tdee.getText().toString());
intent.putExtra("bodyFatInput", bodyfat.getText().toString());
intent.putExtra("tezinaImperialInput", tezina.getText().toString());
intent.putExtra("visinaImperialInputFT", visinaFT.getText().toString());
intent.putExtra("visinaImperialInputINC", visinaINC.getText().toString());
intent.putExtra("bmiInput", bmi.getText().toString());
intent.putExtra("bmrInput", bmr.getText().toString());
intent.putExtra("ffmiInput", ffmi.getText().toString());
startActivity(intent);
}
});
break;
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_statistike_input_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
if (savedInstanceState != null){
String inputi = savedInstanceState.getString("INPUTI");
rezultatTDEE.setText(inputi);
}
onStartCount = 1;
if (savedInstanceState == null)
{
this.overridePendingTransition(R.anim.anim_slide_in_left,
R.anim.anim_slide_out_left);
} else {
onStartCount = 2;
}
// RADIO
radioGrupa = (RadioGroup) findViewById(R.id.radioGrupaStatistike);
imperial = (RadioButton) findViewById(R.id.radioStatistikeImperial);
metric = (RadioButton) findViewById(R.id.radioStatistikeMetric);
//VISINA
visinaCM = (EditText) findViewById(R.id.editTextStatistikeVisinaCM);
visinaFT = (EditText) findViewById(R.id.editTextStatistikeVisinaFEET);
visinaINC = (EditText) findViewById(R.id.editTextStatistikeVisinaINCH);
//TEŽINA
tezina = (EditText) findViewById(R.id.editTextStatistikeTezina);
//BODYFAT
bodyfat = (EditText) findViewById(R.id.editTextStatistikeBF);
//TDEE
tdee = (EditText) findViewById(R.id.editTextStatistikeTDEE);
//BMI
bmi = (EditText) findViewById(R.id.editTextStatistikeBMI);
//BMR
bmr = (EditText) findViewById(R.id.editTextStatistikeBMR);
//FFMI
ffmi = (EditText) findViewById(R.id.editTextStatistikeFFMI);
//BUTTON
spremiRezultat = (Button) findViewById(R.id.buttonStatistikeInputSpremi);
//REZULTATI
rezultatTDEE = (TextView) findViewById(R.id.textViewStatistikeRezultatTDEE);
textVisinaCM = (TextView) findViewById(R.id.textViewStatistikeRezultatVisina);
textVisinaFI = (TextView) findViewById(R.id.textViewStatistikeVisinaFeetInch);
rezultatTezina = (TextView) findViewById(R.id.textViewStatistikeRezultatTezina);
rezultatBMI = (TextView) findViewById(R.id.textViewStatistikeBMI);
rezultatBMR = (TextView) findViewById(R.id.textViewStatistikeBMR);
rezultatFFMI = (TextView) findViewById(R.id.textViewStatistikeFFMI);
rezultatBF = (TextView) findViewById(R.id.textViewStatistikeRezultatBodyFat);
}
public void save(View view){
SharedPreferences sharedPreferences = getSharedPreferences("MyData", Context.MODE_PRIVATE);
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.putString("bmi", bmi.getText().toString());
editor.putString("bmr", bmr.getText().toString());
editor.commit();
}
@Override
protected void onStart() {
// TODO Auto-generated method stub
super.onStart();
if (onStartCount > 1) {
this.overridePendingTransition(R.anim.anim_slide_in_right,
R.anim.anim_slide_out_right);
} else if (onStartCount == 1) {
onStartCount++;
}
}
共享偏好位于save方法。
现在这是第二项活动的代码：
private DrawerLayout mDrawer;
private ActionBarDrawerToggle drawerToggle;
private Toolbar toolbar;
int onStartCount = 0;
ProgressDialog progress;
NavigationView nvDrawer;
DrawerLayout dlDrawer;
android.support.v7.widget.CardView karticaStatistike;
TextView tdeeRezultat, bodyFatRezultat, bmiRezultat, bmrRezultat, ffmiRezultat, tezinaMetricRezultat, visinaMetricRezultat, tezinaImperialRezultat, visinaFTImperialRezultat, visinaINCImperialRezultat, ciljTreningRezultat, razinaTreningRezultat, preporukaTreningRezultat, oneRMPotisakSKlupeRezultat, oneRMCucanjRezultat, oneRMMrtvoDizanjeRezultat, ciljPrehranaRezultat;
public static final String DEFAULT="N/A";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_app_layout_main);
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
karticaStatistike = (android.support.v7.widget.CardView) findViewById(R.id.Statiske);
// STATISTIKE - PASSAN DATA
Intent intent = getIntent();
String tdee = intent.getStringExtra("tdeeInput");
String bf = intent.getStringExtra("bodyFatInput");
String bmi = intent.getStringExtra("bmiInput");
String bmr = intent.getStringExtra("bmrInput");
String ffmi = intent.getStringExtra("ffmiInput");
String tezinaMetric = intent.getStringExtra("tezinaMetricInput");
String visinaMetric = intent.getStringExtra("visinaMetricInput");
String tezinaImperial = intent.getStringExtra("tezinaImperialInput");
String visinaImperial1 = intent.getStringExtra("visinaImperialInputFT");
String visinaImperial2 = intent.getStringExtra("visinaImperialInputINC");
tdeeRezultat = (TextView) findViewById(R.id.textViewStatistikeRezultatTDEE);
tdeeRezultat.setText(tdee);
bodyFatRezultat = (TextView) findViewById(R.id.textViewStatistikeRezultatBodyFat);
bodyFatRezultat.setText(bf);
bmiRezultat = (TextView) findViewById(R.id.textViewStatistikeBMI);
bmiRezultat.setText(bmi);
bmrRezultat = (TextView) findViewById(R.id.textViewStatistikeBMR);
bmrRezultat.setText(bmr);
ffmiRezultat = (TextView) findViewById(R.id.textViewStatistikeFFMI);
ffmiRezultat.setText(ffmi);
tezinaMetricRezultat = (TextView) findViewById(R.id.textViewStatistikeRezultatTezina);
tezinaMetricRezultat.setText(tezinaMetric);
visinaMetricRezultat = (TextView) findViewById(R.id.textViewStatistikeRezultatVisina);
visinaMetricRezultat.setText(visinaMetric);
// SMISLI ŠTA ĆEŠ S OVIM, IZAZIVA KONFLIKT U VISINI I TEŽINI, PROBAJ S NEKIM IFOM
// tezinaImperialRezultat = (TextView) findViewById(R.id.textViewStatistikeRezultatTezina);
// tezinaImperialRezultat.setText(tezinaImperial);
//visinaFTImperialRezultat = (TextView) findViewById(R.id.textViewStatistikeRezultatVisina);
//visinaFTImperialRezultat.setText(visinaImperial1 + "'" + " " + visinaImperial2 + "''");
// STATISTIKE - KRAJ PASSANJA
// TRENING - PASSAN DATA
String oneRMBench = intent.getStringExtra("oneRMBenchInput");
String oneRMSquat = intent.getStringExtra("oneRMSquatInput");
String oneRMDead = intent.getStringExtra("oneRMDeadInput");
String ciljTreninga = intent.getStringExtra("vrijednostSpinneraCilj");
String razinaIskustva = intent.getStringExtra("vrijednostSpinneraRazinaIskustva");
oneRMPotisakSKlupeRezultat = (TextView) findViewById(R.id.textViewTreningRezultat1RMPotisakSKlupe);
oneRMPotisakSKlupeRezultat.setText(oneRMBench);
oneRMCucanjRezultat = (TextView) findViewById(R.id.textViewTreningRezultat1RMCucanj);
oneRMCucanjRezultat.setText(oneRMSquat);
oneRMMrtvoDizanjeRezultat = (TextView) findViewById(R.id.textViewTreningRezultat1RMMrtvoDizanje);
oneRMMrtvoDizanjeRezultat.setText(oneRMDead);
ciljTreningRezultat = (TextView) findViewById(R.id.textViewTreningRezultatCilj);
ciljTreningRezultat.setText(ciljTreninga);
razinaTreningRezultat = (TextView) findViewById(R.id.textViewTreningRezultatRazinaIskustva);
razinaTreningRezultat.setText(razinaIskustva);
// PREHRANA - PASSAN DATA
String prehrana = intent.getStringExtra("vrijednostSpinnera");
ciljPrehranaRezultat = (TextView) findViewById(R.id.textViewPrehranaCiljRezultat);
ciljPrehranaRezultat.setText(prehrana);
tdeeRezultat = (TextView) findViewById(R.id.textViewPrehranaTDEE);
tdeeRezultat.setText(tdee);
dlDrawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawerToggle = setupDrawerToggle();
dlDrawer.setDrawerListener((DrawerLayout.DrawerListener) drawerToggle);
mDrawer = (DrawerLayout) findViewById(R.id.drawer_layout);
nvDrawer = (NavigationView) findViewById(R.id.nvView);
setupDrawerContent(nvDrawer);
onStartCount = 1;
if (savedInstanceState == null)
{
this.overridePendingTransition(R.anim.anim_slide_in_left,
R.anim.anim_slide_out_left);
} else {
onStartCount = 2;
}
}
public void load(View view){
SharedPreferences sharedPreferences = getSharedPreferences("MyData", Context.MODE_PRIVATE);
String bmiSaved = sharedPreferences.getString("bmi", "DEFAULT");
String bmrSaved = sharedPreferences.getString("bmr", "DEFAULT");
if (bmiSaved.equals(DEFAULT) || bmrSaved.equals(DEFAULT)){
Toast.makeText(AppLayoutMain.this, "No Data Was Found", Toast.LENGTH_LONG).show();
} else
Toast.makeText(AppLayoutMain.this, "Data Loaded Sucessfully", Toast.LENGTH_LONG).show();
bmiRezultat.setText(bmiSaved);
bmrRezultat.setText(bmrSaved);
}
共享偏好采用load方法。
我支持大量代码，但我需要显示和保存大量数据。
如果有人可以提供帮助，我会非常感激！
答案 0 :(得分：0)
以下是它的工作原理：
....
String tel = editText.getText();
....
SharedPreferences etext = getPreferenceManager().getSharedPreferences();
SharedPreferences.Editor editor = etext.edit();
editor.putString("tel", tel);
editor.apply();
要撤退：
SharedPreferences etext = getPreferenceManager().getSharedPreferences();
String str = etext.getString("tel", "");
答案 1 :(得分：0)
PreferenceManager.getDefaultSharedPreferences(getApplicationContext())
.edit().putString("key", StringValue).apply();保存字符串。
PreferenceManager.getDefaultSharedPreferences(getApplicationContext())
.getString("key", defaultString);获取字符串。
至少对于默认首选项。
答案 2 :(得分：-1)
你有第二个代码：
else
Toast.makeText(AppLayoutMain.this, "Data Loaded Sucessfully", Toast.LENGTH_LONG).show();
bmiRezultat.setText(bmiSaved);
bmrRezultat.setText(bmrSaved);
我想它应该是这样你需要添加括号{}：
else {
Toast.makeText(AppLayoutMain.this, "Data Loaded Sucessfully", Toast.LENGTH_LONG).show();
bmiRezultat.setText(bmiSaved);
bmrRezultat.setText(bmrSaved);
}
为什么你在默认值中将“DEFAULT”添加为字符串，它不会被初始化为“N / A”，只需将其替换为
sharedPreferences.getString("bmr", DEFAULT);
*我假设您在设计中使用某种按钮从XML中单击调用保存功能。