SharedPreferences存储
SharedPreferences存储
通过健值的方式存储数据,方便获取
layout
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<Button
android:id="@+id/save_data"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Save data"
/>
<Button
android:id="@+id/restore_data"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Restore data"
/>
</LinearLayout>
main
package demo.jq.com.sharedpreferencestest;
import android.content.SharedPreferences;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
/**
* @author Jim
*/
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);
Button saveData = (Button) findViewById(R.id.save_data);
Button restoreData = (Button) findViewById(R.id.restore_data);
saveData.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
SharedPreferences.Editor editor = getSharedPreferences("data",MODE_PRIVATE).edit();
editor.putString("name","Jim");
editor.putInt("age",27);
editor.putBoolean("married",true);
editor.apply();
}
});
restoreData.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
SharedPreferences pref = getSharedPreferences("data",MODE_PRIVATE);
String name = pref.getString("name","");
int age = pref.getInt("age",0);
boolean married = pref.getBoolean("married",false);
Log.d(TAG,"name is " + name);
Log.d(TAG,"age is " + age);
Log.d(TAG,"married is " + married);
}
});
}
}