梦书之家(移动开发)

摘要： 周末在家，利用空闲时间写了Activity，但是本来想重载 public boolean onOptionsItemSelected(MenuItem item) { if (mParent != null) { return mParent.onOptionsItemSelected(item); } return false; }但是，不知到当时哪个筋出问题了，就重载了: public boolean onMenuItemSelected(int featureId, MenuItem item) { ... 阅读全文

摘要： 从Activity A里面用startActivityForResult调用Activity B，但是一调用startActivityForResult,就马上调用A里面的protected void onActivityResult(int requestCode, int resultCode, Intent data)，看了写说明:For example, if the activity you * are launching uses the singleTask launch mode, it will not run in your * task and thus you will 阅读全文