@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.menu_item_new_crime:
Crime crime = new Crime();
CrimeLab.get(getActivity()).addCrime(crime);
Intent i = new Intent(getActivity(), CrimePagerActivity.class);
i.putExtra(CrimeFragment.EXTRA_CRIME_ID, crime.getmId());
startActivityForResult(i, REQUEST_NEW_CRIME);
return true;
default:
return super.onOptionsItemSelected(item);
}
}
@Override
public void onListItemClick(ListView l, View v, int position, long id) {
// getKistAdapter()是ListFragment类的便利方法，该方法可返回设置在ListFragment列表视图上的adapter。
// 调用adapter的getItem（int）方法，把结果转换成Crime对象
Crime c = (Crime) (getListAdapter()).getItem(position); // 必须类型转换
// Log.d(TAG, c.getmTitle()+ " was clicked.");
// start CrimeActivity
// Intent i = new Intent(getActivity(), CrimeActivity.class);
// start CrimePagerActivity
Intent i = new Intent(getActivity(), CrimePagerActivity.class);
i.putExtra(CrimeFragment.EXTRA_CRIME_ID, c.getmId());
startActivityForResult(i, REQUEST_MODIFIED_CRIME);
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
// 获取 crime
Log.i(TAG, "Return from CrimeFragment.");
Crime crime = (Crime) data.getSerializableExtra(CrimeFragment.SER_KEY);
int pos = -1;
// 找到 返回的 Crime 是 mCrimes 中的第几条记录来，后续用来决定是否修改
for (int i = 0; i < mCrimes.size(); i++) {
if (mCrimes.get(i).getmId().equals(crime.getmId())) {
pos = i;
break;
}
}
// 根据请求码决定是“新增”、“修订”哪个发出的请求
switch (requestCode) {
case REQUEST_NEW_CRIME: // 新增 记录
if (resultCode == Activity.RESULT_OK) // 结果代码是 OK
mCrimes.get(pos).setTo(crime);
else { // 结果代码是Cancel
Log.i(TAG, "_NEW_CRIME_Cancel");
mCrimes.remove(pos); // remove
}
break;
case REQUEST_MODIFIED_CRIME: // 修改记录
if (resultCode == Activity.RESULT_OK) { // 结果代码是OK
Log.i(TAG, "_CRIME_MODIFIED_OK_");
mCrimes.get(pos).setTo(crime);
} else if (resultCode == Activity.RESULT_CANCELED) { // 结果代码是Cancel
Log.i(TAG, "_CRIME_MODIFIED_CANCELED_");
} else if (resultCode == CrimeFragment.DELETE_ITEM) {
mCrimes.remove(pos); // remove
}
break;
default:
break;
}
}
