Question

我在Android上创建了一个共享首选项屏幕，用于从共享首选项屏幕接收信息到主屏幕，每件事情都运行正常，但是首选项屏幕中的值没有保存，每次我必须打开共享首选项屏幕并键入信息手动...任何建议自动保存首选项？

这是共享的perefrence代码：

Button b1 = (Button)findViewById(R.id.SavePreff);
        b1.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub

            String ID_NO = ID_NUMBER.getText().toString();
            SharedPreferences prefsExample = getSharedPreferences(PREFS, 0);
            SharedPreferences.Editor editor = prefsExample.edit();
            editor.putString("idNumber", ID_NO);

            if (rd1.isChecked())

                editor.putString("Network", "STC");

            else if (rd2.isChecked())
                editor.putString("Network", "Mobily");

            else 
                editor.putString("Network", "Zain");

            editor.commit();

            Intent i = new Intent(SharedPref.this , MainActivity.class);
            startActivity(i);
        }
    });

这是我正在使用其中信息的主要活动屏幕：

        b1.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {

            SharedPreferences example = getSharedPreferences(PREFS, 0);
            String ID_NUM = example.getString("idNumber", "123432");
            String NETWORK = example.getString("Network", "STC");
            String called_num = "";

            if (NETWORK.equals("Mobily"))
                called_num = "*1400*" + CODE_CHARGE.getText().toString() + "*"+ ID_NUM+ Uri.encode("#");
            else if (NETWORK.equals("STC"))
                called_num = "*155*" + CODE_CHARGE.getText().toString() + "*"+ ID_NUM+ Uri.encode("#");
            else if (NETWORK.equals("Zain"))
                called_num = "*141*" + ID_NUM + "*"
                        + CODE_CHARGE.getText().toString()+ Uri.encode("#");

            Intent i = new Intent("android.intent.action.CALL");
            Uri data = Uri.parse("tel:" + called_num);
            i.setData(data);
            startActivity(i);
        }
    });

Answer 1

共享偏好设置就像这两个

//example1 for Shared Prefs that lasts forever
example1= PreferenceManager.getDefaultSharedPreferences(this);   
//example for Shared Prefs that lasts only just once each time program is running
example2= getApplicationContext().getSharedPreferences("PREFS", Activity.MODE_PRIVATE);

在您的代码中，使用

 example1= PreferenceManager.getDefaultSharedPreferences(this);

希望这对你有用..

值Aren已保存在SharedPreferences中

1 个答案: