类似iOS的NSUserDefaults,采用key-value(键值对)形式，主要用于轻量级的数据存储
public class MainActivity extends AppCompatActivity {
private static final String TAG = "MainActivity";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//存
SharedPreferences.Editor editor = getSharedPreferences("personInfo",MODE_PRIVATE).edit();
editor.putString("name","zhangsan");
editor.putInt("age",18);
editor.putBoolean("married",false);
editor.apply();
//读
SharedPreferences preferences = getSharedPreferences("personInfo",MODE_PRIVATE);
String name = preferences.getString("name","");
int age = preferences.getInt("age",0);
boolean married = preferences.getBoolean("married",false);
Log.d(TAG, "onCreate: " +
name);
Log.d(TAG, "onCreate: " +
age);
Log.d(TAG, "onCreate: " +
married);
}
} |