Android使用SharedPreferences保存少量数据的实现代码

SharedPreferences share = getSharedPreferences("my_file", Context.MODE_PRIVATE);
SharedPreferences.Editor editor = share.edit();
// 4 保存数据到文件
editor.putString("account", input_account.getText().toString());
editor.putString("password", input_password.getText().toString());
editor.putBoolean("pass_remem", pass_remem.isChecked());   // 单选框 选中时返回为 true

SharedPreferences sharedPreferences = getSharedPreferences("my_file", Context.MODE_PRIVATE);
Boolean pass_remem_ = sharedPreferences.getBoolean("pass_remem", false);

editor.putString(“name”, “张三");
editor.putInt(“age”, 21);
editor.putBoolean("married",true)

getString ("name", "");
getInt (“age", 0);
getBoolean (“married", false);

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public class MainActivity extends AppCompatActivity {

    private EditText input_account, input_password;
    private CheckBox pass_remem;
    private Button submit_button;


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

        // 1 获取各个组件的信息， 并存储到数据层
        input_account = this.findViewById(R.id.input_account);
        input_password = this.findViewById(R.id.input_password);
        pass_remem = this.findViewById(R.id.password_remember);
        submit_button = this.findViewById(R.id.submit);

        // 2 设置按钮的点击事件
        submit_button.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                // 3 获取SharedPreferences
                SharedPreferences share = getSharedPreferences("my_file", Context.MODE_PRIVATE);
                SharedPreferences.Editor editor = share.edit();
                // 4 保存数据到文件
                editor.putString("account", input_account.getText().toString());
                editor.putString("password", input_password.getText().toString());
                editor.putBoolean("pass_remem", pass_remem.isChecked());   // 单选框 选中时返回为 true

                // 5 提交数据, 并进行提示
                editor.commit();
                Toast.makeText(MainActivity.this, "数据写入成功", Toast.LENGTH_SHORT).show();

                // App条状
                Intent intent = new Intent(MainActivity.this, SecondActivity.class);
                startActivity(intent);

            }
        });

        // 6 如果选中，下一次加载数据
        SharedPreferences sharedPreferences = getSharedPreferences("my_file", Context.MODE_PRIVATE);
        Boolean pass_remem_ = sharedPreferences.getBoolean("pass_remem", false);

        if (pass_remem_) {

            String account = sharedPreferences.getString("account", "");
            String password = sharedPreferences.getString("password", "");


            input_account.setText(account);
            input_password.setText(password);
            pass_remem.setChecked(pass_remem_);  // 恢复到原来的状态

        }

    }
}