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所以，我是初学者，这是我的第一个应用程序，我无法保存切换开关的状态。当我退出应用程序时，它将清除切换状态，并使其看起来好像未被切换。我已经找遍了解决方案，但是当我尝试实现它的建议时，我会遇到错误和崩溃。我所看到的所有例子与我的代码相比看起来很简单，所以我不知道如何去做。用SharedPreferences保存切换开关/复选框状态
经过这些线程之前：
Save SWITCH button state, and recover state with SharedPrefs
Sharedpreferences with switch button
How to save the state of the toogleButton on/off selection?
how to save the state of switch(button) in android
如果任何人都可以指向我一个解决方案，我会很高兴。下面是相关的代码片段：
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
switchButton_Stat = (Switch) findViewById(switch_s);
textView_S = (TextView) findViewById(R.id.textView_S);
textView_S.setText(switchOff);
switchButton_Stat.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton compoundButton, boolean bChecked) {
if (bChecked) {
textView_S.setText(switchOn);
CompoundButton toggle_d = (CompoundButton)findViewById(R.id.switch_d);
if (toggle_d.isChecked()){
NotificationManager NM = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
NM.cancelAll();
handler_mon.removeCallbacks(runnable_mon);
handler_sun.postDelayed(runnable_sun,300);
}
else {
NotificationManager NM = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
NM.cancelAll();
handler_sun.removeCallbacks(runnable_sun);
handler_mon.postDelayed(runnable_mon,300);
}
}
else {
NotificationManager NM = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
NM.cancelAll();
handler_mon.removeCallbacks(runnable_mon);
handler_sun.removeCallbacks(runnable_sun);
textView_S.setText(switchOff);
}
}
});
switchButton_Day = (Switch) findViewById(R.id.switch_d);
textView_D = (TextView) findViewById(R.id.textView_D);
textView_D.setText(MonOff);
switchButton_Day.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton compoundButton, boolean dChecked) {
if (dChecked) {
textView_D.setText(SunOff);
Switch switch_s = (Switch) findViewById(R.id.switch_s);
if (switch_s.isChecked()){
NotificationManager NM = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
NM.cancelAll();
handler_mon.removeCallbacks(runnable_mon);
handler_sun.postDelayed(runnable_sun,300);
}
Log.i(TAG, "Day Switch");
} else {
textView_D.setText(MonOff);
Switch switch_s = (Switch) findViewById(R.id.switch_s);
if (switch_s.isChecked()){
NotificationManager NM = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
NM.cancelAll();
//NM.cancel(2);
handler_sun.removeCallbacks(runnable_sun);
handler_mon.postDelayed(runnable_mon,300);
}
}
}
});
}
好了，所以我觉得我想通了，我在做什么错了......在我以前的尝试我添加了“SharedPreferences.Editor”对保存的状态因为我有if/else语句嵌套在其他语句中，所以在错误的if/else语句中切换。以下是实施
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
switchButton_Stat = (Switch) findViewById(switch_s);
SharedPreferences tog_prefs = getSharedPreferences("TOG_PREF", MODE_PRIVATE);
boolean tglpref_1 = tog_prefs.getBoolean("tglpref_1", false);
if (tglpref_1) {
switchButton_Stat.setChecked(true);
} else {
switchButton_Stat.setChecked(false);
}
switchButton_Stat = (Switch) findViewById(switch_s);
textView_S = (TextView) findViewById(R.id.textView_S);
textView_S.setText(switchOff);
switchButton_Stat.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton compoundButton, boolean bChecked) {
if (bChecked) {
SharedPreferences.Editor editor = getSharedPreferences("TOG_PREF", MODE_PRIVATE).edit();
editor.putBoolean("tglpref_1", true); // value to store
editor.commit();
textView_S.setText(switchOn);
CompoundButton toggle_d = (CompoundButton)findViewById(R.id.switch_d);
if (toggle_d.isChecked()){
NotificationManager NM = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
NM.cancelAll();
handler_mon.removeCallbacks(runnable_mon);
handler_sun.postDelayed(runnable_sun,300);
}
else {
NotificationManager NM = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
NM.cancelAll();
handler_sun.removeCallbacks(runnable_sun);
handler_mon.postDelayed(runnable_mon,300);
}
}
else {
SharedPreferences.Editor editor = getSharedPreferences("TOG_PREF", MODE_PRIVATE).edit();
editor.putBoolean("tglpref_1", false); // value to store
editor.commit();
NotificationManager NM = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
NM.cancelAll();
handler_mon.removeCallbacks(runnable_mon);
handler_sun.removeCallbacks(runnable_sun);
textView_S.setText(switchOff);
}
}
});
嘿有多少'Switch'（s）在那里？一个或多个？ – tpk
有2个开关 – UberNoob
所有最好的和快乐的编码。 – tpk