Android中SharedPreferences简单使用实例

本文实例为大家分享了sharedpreferences简单使用案例，供大家参考，具体内容如下

mainactivity：

public class sharedpreferencestestactivity extends activity implements view.onclicklistener{
  private edittext edittext;
  private textview textview;
  private button write;
  private button read;
  @override
  protected void oncreate(bundle savedinstancestate) {
    super.oncreate(savedinstancestate);
    setcontentview(r.layout.activity_shared_preferences_test);
    initview();

    write.setonclicklistener(this);
    read.setonclicklistener(this);
  }

  private void initview() {
    edittext=(edittext)findviewbyid(r.id.edit_test);
    textview=(textview)findviewbyid(r.id.text_test);
    write=(button)findviewbyid(r.id.write);
    read=(button)findviewbyid(r.id.read);
  }

  @override
  public void onclick(view v) {
    switch (v.getid()){
      case r.id.write:
        string some=edittext.gettext().tostring();
        sharedpreferences pref = sharedpreferencestestactivity.this.getsharedpreferences("data",mode_private);
        sharedpreferences.editor editor = pref.edit();
        editor.putstring("content",some);
        editor.commit();
        toast.maketext(sharedpreferencestestactivity.this, "写入成功" , toast.length_long).show();
        edittext.settext("");
        break;
      case r.id.read:
        sharedpreferences pre = getsharedpreferences("data",mode_private);
        string name = pre.getstring("content","");
        textview.settext(name);
        toast.maketext(sharedpreferencestestactivity.this, "读取成功" , toast.length_long).show();
        break;

    }
  }
}

mainactivity.xml

<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.fae.mobile.testactivity.sharedpreferencestestactivity">
  <linearlayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal">
    <edittext

      android:textcolor="@color/red"
      android:background="@null"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:id="@+id/edit_test"
      android:layout_weight="1"
      />
    <textview
      android:textcolor="@color/blue"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:id="@+id/text_test"
      android:layout_weight="1"/>
  </linearlayout>
  <button
    android:layout_margintop="25dp"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:id="@+id/read"
    android:text="读"/>
  <button
    android:layout_margintop="25dp"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:id="@+id/write"
    android:text="写"/>

</linearlayout>

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。