Android 中SharedPreferences使用
一、SharedPreferences使用1
protected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);SharedPreferences mPerferences = PreferenceManager.getDefaultSharedPreferences(this);int counter = mPerferences.getInt("counter", 1);TextView mTextView = (TextView)findViewById(R.id.showMssage);mTextView.setText("Counter is :" + counter);Editor mEditor = mPerferences.edit();mEditor.putInt("counter", ++counter);mEditor.commit();}
mEditor.putInt("counter", ++counter); 為寫入counter的值為++counter,最後提交。
int counter = mPerferences.getInt("counter", 1); 擷取寫入couter的值,預設為1.
二. 下面會建立SPF.xml檔案 並將資料寫入xml檔案中,最後讀取xml中的資料。
protected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);SharedPreferences sharedPreferences = this.getSharedPreferences("SPF",MODE_PRIVATE);Editor editor = sharedPreferences.edit();editor.putString("name", "張三");editor.putInt("age", 29);editor.putBoolean("boy", true);editor.commit();Log.i("name", sharedPreferences.getString("name", "no name"));Log.i("age", Integer.toString(sharedPreferences.getInt("age", 0)));Log.i("boy", Boolean.toString(sharedPreferences.getBoolean("boy", false)));}
參考:
SharedPreferences用法