SharePreferenceDemo
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MainActivity.java
public class MainActivity extends Activity {
EditText edt1, edt2;@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button button1 = (Button) findViewById(R.id.button1);
button1.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
edt1 = (EditText) findViewById(R.id.edt1);
edt2 = (EditText) findViewById(R.id.edt2);
String user = edt1.getText().toString();
String password = edt2.getText().toString();
SharedPreferences sharedPreferences = getSharedPreferences(
"setting", Context.MODE_PRIVATE); // 私有数据
Editor editor = sharedPreferences.edit();// 获取编辑器
editor.putString("username", user);
editor.putString("userpassword", password);
editor.commit();// 提交修改
}
});
// Button button2 = (Button) findViewById(R.id.button2);
// button2.setOnClickListener(new OnClickListener() {
//
// @Override
// public void onClick(View v) {
// TODO Auto-generated method stub
/**
* 自动加载sharepreference文件,并填写
*/
SharedPreferences share = getSharedPreferences("setting",
Context.MODE_PRIVATE);
String username = share.getString("username", "");
String userpassword = share.getString("userpassword", "");
edt1 = (EditText) findViewById(R.id.edt1);
edt2 = (EditText) findViewById(R.id.edt2);
edt1.setText(username);
edt2.setText(userpassword);
//
// TextView text1 = (TextView) findViewById(R.id.text1);
// TextView text2 = (TextView) findViewById(R.id.text2);
//
// text1.setText(username);
// text2.setText(userpassword);
// }
// });
}
}
activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<EditText
android:id="@+id/edt1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:hint="输入账号" />
<EditText
android:id="@+id/edt2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:hint="输入密码" />
<Button
android:id="@+id/button1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="保存数据" />
<Button
android:id="@+id/button2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="显示数据" />
<TextView
android:id="@+id/text1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="null" />
<TextView
android:id="@+id/text2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="null" />
</LinearLayout>