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:
代码语言:javascript复制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
代码语言:javascript复制<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。