android 不同Activity使用一个SharedPreference

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")); }


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