所以我很确定我知道我的问题是什么，但我不知道如何解决它或解决它...我正在为一个班级制作这个游戏而且现在我正试图保存用户单击后退按钮或退出应用程序时的应用程序状态。但是，当我点击后退按钮时，当你第一次启动时，一切都会被重置。？
这是我的班级：
public class PlayScreen extends Activity {
Spinner spinnerMonsters;
Button btnBattle;
TextView textViewBattleResults;
TextView textViewLevelGained;
TextView textViewXPValue;
TextView textViewXpNextLevel;
TextView textViewLevelValue;
TextView textViewGoldValue;
TextView textview5;
TextView textViewStrRace;
TextView textViewStrClass;
TextView textViewStrAlliance;
private int xp = 0;
private int level = 1;
private int gold = 0;
private int hp = 10;
private int mp = 10;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.play_screen);
TextView textview5 = (TextView) findViewById(R.id.textView5);
TextView textViewStrRace = (TextView) findViewById(R.id.textViewStrRace);
TextView textViewStrClass = (TextView) findViewById(R.id.TextViewStrClass);
TextView textViewStrAlliance = (TextView) findViewById(R.id.textViewStrAlliance);
String Name = getIntent().getStringExtra("strName");
textview5.setText(Name);
textview5.setTextColor(Color.CYAN);
String Race = getIntent().getStringExtra("strRace");
textViewStrRace.setText(Race);
String Class = getIntent().getStringExtra("strClass");
textViewStrClass.setText(Class);
String Alliance = getIntent().getStringExtra("strAlliance");
textViewStrAlliance.setText(Alliance);
Button btnInventory = (Button) findViewById(R.id.button1);
btnInventory.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent(v.getContext(), Inventory.class);
startActivityForResult(intent, 0);
}
});
Button btnEquipment = (Button) findViewById(R.id.button2);
btnEquipment.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent(v.getContext(), Equipment.class);
startActivityForResult(intent, 0);
}
});
Button btnStats = (Button) findViewById(R.id.button3);
btnStats.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent(v.getContext(), Statistics.class);
startActivityForResult(intent, 0);
}
});
Button btnShop = (Button) findViewById(R.id.Button01);
btnShop.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent(v.getContext(), Shop.class);
startActivityForResult(intent, 0);
}
});
Button btnCrafting = (Button) findViewById(R.id.button4);
btnCrafting.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent(v.getContext(), Crafting.class);
startActivityForResult(intent, 0);
}
});
Button btnClassTraining = (Button) findViewById(R.id.button5);
btnClassTraining.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent(v.getContext(), ClassTraining.class);
startActivityForResult(intent, 0);
}
});
Button btnBattle = (Button) findViewById(R.id.btnBattle);
btnBattle.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method
// -----------------------------------------------------------------------------------------------------------------------------
Spinner spinnerMonsters = (Spinner) findViewById(R.id.spinnerMonsters);
final Button btnBattle = (Button) findViewById(R.id.btnBattle);
final TextView textViewBattleResults = (TextView) findViewById(R.id.textViewBattleResults);
TextView textViewXPValue = (TextView) findViewById(R.id.textViewXPValue);
TextView textViewXpNextLevel = (TextView) findViewById(R.id.textViewXpNextLevel);
final TextView textViewLevelGained = (TextView) findViewById(R.id.textViewLevelGained);
TextView textViewLevelValue = (TextView) findViewById(R.id.textViewLevelValue);
TextView textViewGoldValue = (TextView) findViewById(R.id.textViewGoldValue);
final TextView textViewXPResults = (TextView) findViewById(R.id.textViewXPResults);
final TextView textViewGoldResults = (TextView) findViewById(R.id.textViewGoldResults);
final TextView textViewLootResults = (TextView) findViewById(R.id.textViewLootResults);
TextView textViewHP = (TextView) findViewById(R.id.textViewHP);
TextView textViewMP = (TextView) findViewById(R.id.textViewMP);
final TextView textViewTimer = (TextView) findViewById(R.id.textView10);
int XP = Integer.parseInt(textViewXPValue.getText().toString());
int XPNEXT = Integer.parseInt(textViewXpNextLevel.getText()
.toString());
// -----------------------------------------------------------------------------------------------------------------------------
// ---------------------
// XPValue <= XPLimit |
// ---------------------
if (textViewXPValue.getText().toString()
.equals(textViewXpNextLevel.getText().toString())) {
int newLimit = Integer.parseInt(textViewXpNextLevel
.getText().toString()) + 100;
textViewXpNextLevel.setText(newLimit + "");
textViewLevelValue.setText(String.valueOf(level));
textViewHP.setText(String.valueOf(hp));
textViewMP.setText(String.valueOf(mp));
textViewLevelGained.setVisibility(View.VISIBLE);
textViewLevelGained.setText("You have gained a level!");
xp = 0;
level = level + 1;
hp = hp + 10;
mp = mp + 10;
} else if (XP >= XPNEXT) {
int newLimit = Integer.parseInt(textViewXpNextLevel
.getText().toString()) + 100;
textViewXpNextLevel.setText(newLimit + "");
textViewLevelValue.setText(String.valueOf(level));
textViewHP.setText(String.valueOf(hp));
textViewMP.setText(String.valueOf(mp));
textViewLevelGained.setVisibility(View.VISIBLE);
textViewLevelGained.setText("You have gained a level!");
xp = 0;
level = level + 1;
hp = hp + 10;
mp = mp + 10;
}
if (level == 51) {
textViewXPValue.setText(textViewXpNextLevel.getText()
.toString());
textViewBattleResults.setText("Thanks for playing!");
level = level + 0;
hp = hp + 0;
mp = mp + 0;
xp = xp + 0;
}
// -----------------------------------------------------------------------------------------------------------------------------
// ----------------------------
// Count Down Timer Activity |
// ----------------------------
new CountDownTimer(1000, 1000) {
public void onTick(long millisUntilFinished) {
textViewTimer.setText("" + millisUntilFinished / 1000);
textViewXPResults.setVisibility(View.VISIBLE);
textViewGoldResults.setVisibility(View.VISIBLE);
textViewLootResults.setVisibility(View.VISIBLE);
}
public void onFinish() {
textViewTimer.setVisibility(View.INVISIBLE);
textViewBattleResults.setVisibility(View.INVISIBLE);
textViewXPResults.setText("XP: ");
textViewGoldResults.setText("Gold: ");
textViewLootResults.setText("Loot: ");
btnBattle.setVisibility(View.VISIBLE);
textViewLevelGained.setVisibility(View.INVISIBLE);
}
}.start();
textViewTimer.setVisibility(View.VISIBLE);
btnBattle.setVisibility(View.INVISIBLE);
// -----------------------------------------------------------------------------------------------------------------------------
// --------------------
// Monster sequences |
// --------------------
// Training Dummy
if (spinnerMonsters.getSelectedItem().toString()
.equals("(0) Training Dummy")) {
textViewBattleResults.setVisibility(View.VISIBLE);
if (level == 51) {
xp = xp + 0;
} else {
textViewBattleResults
.setText("You have killed Training Dummy!");
xp = xp + 100;
textViewXPValue.setText(String.valueOf(xp));
textViewXPResults.setText("XP: +10");
textViewGoldResults.setText("Gold: 0");
textViewLootResults.setText("Loot: none");
}
}// Cockroach
else if (spinnerMonsters.getSelectedItem().toString()
.equals("(2) Cockroach")) {
textViewBattleResults.setVisibility(View.VISIBLE);
if (level == 51) {
xp = xp + 0;
} else if (level >= 2) {
textViewBattleResults
.setText("You have killed a Cockroach!");
xp = xp + 27;
gold = gold + 3;
textViewXPValue.setText(String.valueOf(xp));
textViewGoldValue.setText(String.valueOf(gold));
textViewXPResults.setText("XP: +27");
textViewGoldResults.setText("Gold: +3");
textViewLootResults.setText("Loot: none");
} else {
textViewBattleResults
.setText("You have been defeated by a Cockroach!");
xp = xp + 0;
gold = gold + 0;
textViewXPValue.setText(String.valueOf(xp));
textViewGoldValue.setText(String.valueOf(gold));
textViewXPResults.setText("XP: 0");
textViewGoldResults.setText("Gold: 0");
textViewLootResults.setText("Loot: none");
}
}// Diseased Rat
else if (spinnerMonsters.getSelectedItem().toString()
.equals("(3) Diseased Rat")) {
textViewBattleResults.setVisibility(View.VISIBLE);
if (level == 51) {
xp = xp + 0;
}
if (level >= 3) {
textViewBattleResults
.setText("You have killed a Diseased Rat!");
xp = xp + 36;
gold = gold + 5;
textViewXPValue.setText(String.valueOf(xp));
textViewGoldValue.setText(String.valueOf(gold));
textViewXPResults.setText("XP: +36");
textViewGoldResults.setText("Gold: +5");
textViewLootResults.setText("Loot: none");
} else {
textViewBattleResults
.setText("You have been defeated by a Diseased Rat!");
xp = xp + 0;
gold = gold + 0;
textViewXPValue.setText(String.valueOf(xp));
textViewGoldValue.setText(String.valueOf(gold));
textViewXPResults.setText("XP: 0");
textViewGoldResults.setText("Gold: 0");
textViewLootResults.setText("Loot: none");
}
}// Black Widdow
else if (spinnerMonsters.getSelectedItem().toString()
.equals("(5) Black Widdow")) {
textViewBattleResults.setVisibility(View.VISIBLE);
if (level == 51) {
xp = xp + 0;
}
if (level >= 5) {
textViewBattleResults
.setText("You have killed a Black Widdow!");
xp = xp + 45;
gold = gold + 7;
textViewXPValue.setText(String.valueOf(xp));
textViewGoldValue.setText(String.valueOf(gold));
textViewXPResults.setText("XP: +45");
textViewGoldResults.setText("Gold: +7");
textViewLootResults.setText("Loot: none");
} else {
textViewBattleResults
.setText("You have been defeated by a Black Widdow!");
xp = xp + 0;
gold = gold + 0;
textViewXPValue.setText(String.valueOf(xp));
textViewGoldValue.setText(String.valueOf(gold));
textViewXPResults.setText("XP: 0");
textViewGoldResults.setText("Gold: 0");
textViewLootResults.setText("Loot: none");
}
}// Goblin
else if (spinnerMonsters.getSelectedItem().toString()
.equals("(7) Goblin")) {
textViewBattleResults.setVisibility(View.VISIBLE);
if (level == 51) {
xp = xp + 0;
}
if (level >= 7) {
textViewBattleResults
.setText("You have killed a Goblin!");
xp = xp + 51;
gold = gold + 11;
textViewXPValue.setText(String.valueOf(xp));
textViewGoldValue.setText(String.valueOf(gold));
textViewXPResults.setText("XP: +51");
textViewGoldResults.setText("Gold: +11");
textViewLootResults.setText("Loot: none");
} else {
textViewBattleResults
.setText("You have been defeated by a Goblin!");
xp = xp + 0;
gold = gold + 0;
textViewXPValue.setText(String.valueOf(xp));
textViewGoldValue.setText(String.valueOf(gold));
textViewXPResults.setText("XP: 0");
textViewGoldResults.setText("Gold: 0");
textViewLootResults.setText("Loot: none");
}
}// Undead Troll
else if (spinnerMonsters.getSelectedItem().toString()
.equals("(9) Undead Troll")) {
textViewBattleResults.setVisibility(View.VISIBLE);
if (level == 51) {
xp = xp + 0;
}
if (level >= 9) {
textViewBattleResults
.setText("You have killed an Undead Troll!");
xp = xp + 63;
gold = gold + 19;
textViewXPValue.setText(String.valueOf(xp));
textViewGoldValue.setText(String.valueOf(gold));
textViewXPResults.setText("XP: +63");
textViewGoldResults.setText("Gold: +19");
textViewLootResults.setText("Loot: none");
} else {
textViewBattleResults
.setText("You have been defeated by an Undead Troll!");
xp = xp + 0;
gold = gold + 0;
textViewXPValue.setText(String.valueOf(xp));
textViewGoldValue.setText(String.valueOf(gold));
textViewXPResults.setText("XP: 0");
textViewGoldResults.setText("Gold: 0");
textViewLootResults.setText("Loot: none");
}
}// Giant
else if (spinnerMonsters.getSelectedItem().toString()
.equals("(13) Giant")) {
textViewBattleResults.setVisibility(View.VISIBLE);
if (level == 51) {
xp = xp + 0;
}
if (level > 13) {
textViewBattleResults
.setText("You have killed a Giant!");
xp = xp + 72;
gold = gold + 28;
textViewXPValue.setText(String.valueOf(xp));
textViewGoldValue.setText(String.valueOf(gold));
textViewXPResults.setText("XP: +72");
textViewGoldResults.setText("Gold: +28");
textViewLootResults.setText("Loot: none");
} else {
textViewBattleResults
.setText("You have defeated killed by a Giant!");
xp = xp + 0;
gold = gold + 0;
textViewXPValue.setText(String.valueOf(xp));
textViewGoldValue.setText(String.valueOf(gold));
textViewXPResults.setText("XP: 0");
textViewGoldResults.setText("Gold: 0");
textViewLootResults.setText("Loot: none");
}
}// Young Blue Drake
else if (spinnerMonsters.getSelectedItem().toString()
.equals("(17) Young Blue Drake")) {
textViewBattleResults.setVisibility(View.VISIBLE);
if (level == 51) {
xp = xp + 0;
}
if (level > 17) {
textViewBattleResults
.setText("You have killed a Young Blue Drake!");
xp = xp + 88;
gold = gold + 42;
textViewXPValue.setText(String.valueOf(xp));
textViewGoldValue.setText(String.valueOf(gold));
textViewXPResults.setText("XP: +88");
textViewGoldResults.setText("Gold: +42");
textViewLootResults.setText("Loot: none");
} else {
textViewBattleResults
.setText("You have been defeated by a Young Blue Drake!");
xp = xp + 0;
gold = gold + 0;
textViewXPValue.setText(String.valueOf(xp));
textViewGoldValue.setText(String.valueOf(gold));
textViewXPResults.setText("XP: 0");
textViewGoldResults.setText("Gold: 0");
textViewLootResults.setText("Loot: none");
}
}// Hobgoblin
else if (spinnerMonsters.getSelectedItem().toString()
.equals("(21) Hobgoblin")) {
textViewBattleResults.setVisibility(View.VISIBLE);
if (level == 51) {
xp = xp + 0;
}
if (level > 21) {
textViewBattleResults
.setText("You have killed a Hobgoblin!");
xp = xp + 94;
gold = gold + 51;
textViewXPValue.setText(String.valueOf(xp));
textViewGoldValue.setText(String.valueOf(gold));
textViewXPResults.setText("XP: +94");
textViewGoldResults.setText("Gold: +51");
textViewLootResults.setText("Loot: none");
} else {
textViewBattleResults
.setText("You have been defeated by a Hobgoblin!");
xp = xp + 0;
gold = gold + 0;
textViewXPValue.setText(String.valueOf(xp));
textViewGoldValue.setText(String.valueOf(gold));
textViewXPResults.setText("XP: 0");
textViewGoldResults.setText("Gold: 0");
textViewLootResults.setText("Loot: none");
}
}// Skeletion
else if (spinnerMonsters.getSelectedItem().toString()
.equals("(23) Skeleton")) {
textViewBattleResults.setVisibility(View.VISIBLE);
if (level == 51) {
xp = xp + 0;
}
if (level > 23) {
textViewBattleResults
.setText("You have killed a Skeleton!");
xp = xp + 101;
gold = gold + 60;
textViewXPValue.setText(String.valueOf(xp));
textViewGoldValue.setText(String.valueOf(gold));
textViewXPResults.setText("XP: +101");
textViewGoldResults.setText("Gold: +60");
textViewLootResults.setText("Loot: none");
} else {
textViewBattleResults
.setText("You have been defeated by a Skeleton!");
xp = xp + 0;
gold = gold + 0;
textViewXPValue.setText(String.valueOf(xp));
textViewGoldValue.setText(String.valueOf(gold));
textViewXPResults.setText("XP: 0");
textViewGoldResults.setText("Gold: 0");
textViewLootResults.setText("Loot: none");
}
}// Thief Master
else if (spinnerMonsters.getSelectedItem().toString()
.equals("(26) Thief Master")) {
textViewBattleResults.setVisibility(View.VISIBLE);
if (level == 51) {
xp = xp + 0;
}
if (level > 26) {
textViewBattleResults
.setText("You have killed a Thief Master!");
xp = xp + 117;
gold = gold + 74;
textViewXPValue.setText(String.valueOf(xp));
textViewGoldValue.setText(String.valueOf(gold));
textViewXPResults.setText("XP: +117");
textViewGoldResults.setText("Gold: +74");
textViewLootResults.setText("Loot: none");
} else {
textViewBattleResults
.setText("You have been defeated by a Thief Master!");
xp = xp + 0;
gold = gold + 0;
textViewXPValue.setText(String.valueOf(xp));
textViewGoldValue.setText(String.valueOf(gold));
textViewXPResults.setText("XP: 0");
textViewGoldResults.setText("Gold: 0");
textViewLootResults.setText("Loot: none");
}
}// Homunculus
else if (spinnerMonsters.getSelectedItem().toString()
.equals("(30) Homunculus")) {
textViewBattleResults.setVisibility(View.VISIBLE);
if (level == 51) {
xp = xp + 0;
}
if (level > 30) {
textViewBattleResults
.setText("You have killed a Homunculus!");
xp = xp + 121;
gold = gold + 82;
textViewXPValue.setText(String.valueOf(xp));
textViewGoldValue.setText(String.valueOf(gold));
textViewXPResults.setText("XP: +121");
textViewGoldResults.setText("Gold: +82");
textViewLootResults.setText("Loot: none");
} else {
textViewBattleResults
.setText("You have been defeated by a Homunculus!");
xp = xp + 0;
gold = gold + 0;
textViewXPValue.setText(String.valueOf(xp));
textViewGoldValue.setText(String.valueOf(gold));
textViewXPResults.setText("XP: 0");
textViewGoldResults.setText("Gold: 0");
textViewLootResults.setText("Loot: none");
}
}
}
}); /* Ends the button onClickListener */
}
}
现在我很确定问题出在我放置所有私人int的地方，当你第一次开始玩时，它们都等于0或者其他什么。我迷路了...
我删除了我的onPause和onResume事件，因为它们只是不工作，这是我尝试之前的代码。
答案 0 :(得分：0)
所有变量都在运行时具有状态。如果关闭应用程序每个分配的内存，并且变量中的值存储也会丢失。您必须保存这些内容，例如在SQLite数据库或设备上的xml文件中，您可以从中获取值。
阅读有关android上的存储的教程可能会有所帮助： Storage Options
答案 1 :(得分：0)
您可以使用以下内容保存应用在onPause（）中的值：
Editor editor = getSharedPreferences("myStatusFile", MODE_PRIVATE).edit();
editor.clear();
editor.putString("string1", string1);
editor.putInteger("integer1", integer1);
editor.commit();
并使用：
在onResume（）中恢复它们SharedPreferences preferences = getSharedPreferences("myStatusFile", MODE_PRIVATE);
string1 = preferences.getString("string1", null);
integer1 = preferences.getString("integer1", 0);