4.12博客

又到周五了，这日子越来越有盼头了

学习内容：只有安卓

package com.dongnaoedu.chapter06;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Context;

import android.content.SharedPreferences;

import android.os.Bundle;

import android.view.View;

import android.widget.CheckBox;

import android.widget.EditText;

public class ShareWriteActivity extends AppCompatActivity implements View.OnClickListener {

    private EditText et_name;

    private EditText et_age;

    private EditText et_height;

    private EditText et_weight;

    private CheckBox ck_married;

    private SharedPreferences preferences;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_share_write);

        et_name = findViewById(R.id.et_name);

        et_age = findViewById(R.id.et_age);

        et_height = findViewById(R.id.et_height);

        et_weight = findViewById(R.id.et_weight);

        ck_married = findViewById(R.id.ck_married);

        findViewById(R.id.btn_save).setOnClickListener(this);

        preferences = getSharedPreferences("config", Context.MODE_PRIVATE);

        reload();

    }

    private void reload() {

        String name = preferences.getString("name", null);

        if (name != null) {

            et_name.setText(name);

        }

        int age = preferences.getInt("age", 0);

        if (age != 0) {

            et_age.setText(String.valueOf(age));

        }

        float height = preferences.getFloat("height", 0f);

        if (height != 0f) {

            et_height.setText(String.valueOf(height));

        }

        float weight = preferences.getFloat("weight", 0f);

        if (weight != 0f) {

            et_weight.setText(String.valueOf(weight));

        }

        boolean married = preferences.getBoolean("married", false);

        ck_married.setChecked(married);

    }

    @Override

    public void onClick(View v) {

        String name = et_name.getText().toString();

        String age = et_age.getText().toString();

        String height = et_height.getText().toString();

        String weight = et_weight.getText().toString();

        SharedPreferences.Editor editor = preferences.edit();

        editor.putString("name", name);

        editor.putInt("age", Integer.parseInt(age));

        editor.putFloat("height", Float.parseFloat(height));

        editor.putFloat("weight", Float.parseFloat(weight));

        editor.putBoolean("married", ck_married.isChecked());

        editor.commit();

    }

}