从另一个类访问共享的首选项布尔值 [英] Access shared preference Boolean value from another class

问题描述

我创建了2个复选框，并将它们的值保存为共享首选项中的布尔数据类型.如何在另一个类中获取它，并在if-else条件下使用它?

I have Created 2 check boxes and saved their values in boolean data type in shared preferences. How do I get it in another class and use it in if-else conditions?

头等舱

        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.dash_board);

        onPassCodeListener();

        cb1 = (CheckBox) findViewById(R.id.cb1);
        cb1.setChecked(getfromsp("cb1"));
        cb1.setOnCheckedChangeListener(new OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                switch (buttonView.getId()){
                    case R.id.cb1:
                        saveinsp("cb1",isChecked);
                        break;
                }
            }
        });

        cb2 = (CheckBox) findViewById(R.id.cb2);
        cb2.setChecked(getfromsp("cb2"));
        cb2.setOnCheckedChangeListener(new OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                switch (buttonView.getId()){
                    case R.id.cb2:
                        saveinsp("cb2",isChecked);
                        break;
                }
            }
        });


    }

    public Boolean getfromsp(String key){
        sp1 = getApplicationContext().getSharedPreferences("checkbox", android.content.Context.MODE_PRIVATE);
        return sp1.getBoolean(key , false);
    }

    public void saveinsp(String key, Boolean value){
        sp1 = getApplicationContext().getSharedPreferences("checkbox", android.content.Context.MODE_PRIVATE);
        SharedPreferences.Editor editor = sp1.edit();
        editor.putBoolean(key , value);
        editor.commit();
    }

和二等舱

public class MyReceiver extends BroadcastReceiver {
    SharedPreferences sp1, sp2;


    @Override
    public void onReceive(Context context, Intent intent) {

        Bundle bundle = intent.getExtras();

        if(bundle != null){
            Object[] pdus = (Object[]) bundle.get("pdus");

            for (int i = 0; i < pdus.length ; i++) {
                SmsMessage sms = SmsMessage.createFromPdu((byte[]) pdus[i]);
                String message = sms.getMessageBody();

                Toast.makeText(context, "Broadcast received", Toast.LENGTH_SHORT).show();
            }
        }
        sp2 = context.getSharedPreferences("passcode", Context.MODE_PRIVATE);
        String pass = sp2.getString("passcode","");
        sp1 = context.getSharedPreferences("checbox",Context.MODE_PRIVATE);
        Boolean cb1 = sp1.getBoolean("cb1", )
        if(bundle.equals(pass)){

        }


    }

推荐答案

设置SharedPreferences

Setting SharedPreferences

SharedPreferences sp =getSharedPreferences("checkbox", MODE_PRIVATE);
SharedPreferences.Editor et = sp.edit();
et.putBoolean("isLogin", true);
et.commit();

从SharedPreferences获取价值

Getting value from SharedPreferences

SharedPreferences sp = getSharedPreferences("checkbox", 0);
boolean cb1 = sp.getBoolean("isLogin", false);

这篇关于从另一个类访问共享的首选项布尔值的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！