SharedPreferences存储

布局文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.example.hzx.sharedprefernces.MainActivity">

    <Button
        android:id="@+id/save_data"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="save data"/>
    <Button
        android:id="@+id/restore_data"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Restore data"/>

</LinearLayout>

//activity

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button saveData = (Button)findViewById(R.id.save_data);
        saveData.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                SharedPreferences.Editor editor = getSharedPreferences("caicai456.txt",MODE_PRIVATE).edit();
                editor.putString("name","Tom");
                editor.putInt("age",28);
                editor.putBoolean("married",false);
                editor.apply();
            }
        });


        Button restoreData = (Button)findViewById(R.id.restore_data);
        restoreData.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                SharedPreferences pref = getSharedPreferences("caicai456.txt",MODE_PRIVATE);
                String name = pref.getString("name","");
                int age = pref.getInt("age",0);
                boolean married = pref.getBoolean("married",false);
                Log.d("123","name is "+name);
                Log.d("123","age is "+age);
                Log.d("123","married is "+married);

            }
        });
    }