android 不同Activity使用一个SharedPreference

最新推荐文章于 2020-10-16 14:17:35 发布

最新推荐文章于 2020-10-16 14:17:35 发布 · 409 阅读

文章标签：

#移动开发

本文介绍了一个简单的示例，展示了如何利用Android中的SharedPreferences组件来存储和读取用户的密码。通过两个Activity的实例，详细解释了存储和读取过程。

存储密码的Activity:

public class SharedPreferenceTest extends Activity { /** Called when the activity is first created. */ private ImageView mSkip; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); mSkip = (ImageView)findViewById(R.id.mSkip); mSkip.setOnClickListener(new OnClickListener(){ public void onClick(View v) { // TODO Auto-generated method stub Intent localIntent = new Intent(); localIntent.setClass(getApplicationContext(), CopyOfSharedPreferenceTest.class); SharedPreferenceTest.this.startActivity(localIntent); } }); SharedPreferences.Editor spf =getSharedPreferences("USERPASS",PreferenceActivity.MODE_WORLD_READABLE).edit(); spf.putString("passWord", "hello"); spf.commit(); } }读取密码的Activity:

public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); SharedPreferences sp = getSharedPreferences("USERPASS",PreferenceActivity.MODE_PRIVATE); Log.i("xiao", "passwd = " + sp.getString("passWord", "123")); }