android开发第三天SharedPreferences读写

android开发第三天SharedPreferences读写

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    public void onClick(View v) {
        switch (v.getId()) {
        case R.id.button1:
            SharedPreferences sp = this.getSharedPreferences("myxml", Context.MODE_PRIVATE);
            Editor editor = sp.edit();
            editor.putString("name", "nanguabing");
            editor.putInt("age", 20);

            //持久化操作到存储设备
            editor.commit();
            Toast.makeText(this, "写入sp完成", 1).show();
            break;
        case R.id.button2:
            SharedPreferences sp1 = this.getSharedPreferences("myxml", Context.MODE_PRIVATE);
            String name = sp1.getString("name", "nobody");
            int age = sp1.getInt("age", 0);
            Toast.makeText(this, "name=" + name + ",age=" + age, 1).show();
            break;
        default:
            break;
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }

}

文件格式:

<?xml version='1.0' encoding='utf-8' standalone='yes' ?>
<map>
<string name="name">nanguabing</string>
<int name="age" value="20" />
</map>

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