我的Main活动有两个标签(片段)。在片段中,我通过startactivityforresult调用一个新活动。在新活动中,我按下后退按钮时输出结果代码。问题是片段中的“OnActivityResult”从未被调用过,我无法理解为什么!。
片段代码:
RequestListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
view.setSelected(true);
Intent SelectedRentRequest = new Intent(getActivity(), SelectedRentRequest.class);
SelectedRentRequest.putExtra("CarNumbers", SCarNumbers);
startActivityForResult(SelectedRentRequest, 1);
}
});
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == 1 && resultCode == 1 && data != null) {
LoadList();
Toast.makeText(getContext(), "hi", Toast.LENGTH_LONG).show();
}
}
第二个活动代码(后退部分):
@Override
public void onBackPressed() {
Intent intent = new Intent();
setResult(1, intent);
finish();
}
主要活动(标签部分):
TabLayout tabLayout = (TabLayout) findViewById(R.id.Maintab);
assert tabLayout != null;
tabLayout.addTab(tabLayout.newTab().setText("سيارات محافظتك"));
tabLayout.addTab(tabLayout.newTab().setText("طلبات السيارات"));
tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);
final ViewPager viewPager = (ViewPager) findViewById(R.id.pager);
final PagerAdapter adapter = new PagerAdapter
(getSupportFragmentManager(), tabLayout.getTabCount(), bundle);
assert viewPager != null;
viewPager.setAdapter(adapter);
viewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout));
tabLayout.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
@Override
public void onTabSelected(TabLayout.Tab tab) {
viewPager.setCurrentItem(tab.getPosition());
}
@Override
public void onTabUnselected(TabLayout.Tab tab) {
}
@Override
public void onTabReselected(TabLayout.Tab tab) {
}
});
答案 0 :(得分:1)
为了使onActivityResult在你的片段中起作用,你必须在你的活动中实现它,因为setResult方法将结果返回给托管片段而不是直接托管片段的Activity
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
}
答案 1 :(得分:1)
确保您使用的是最新的支持库:
compile 'com.android.support:support-v7:24.1.1'
相关错误已在23.2中修复。
还要确保父活动在清单中指定了有效的launchMode
。例如。如果singleTask
startActivityForResult
会立即调用该方法
答案 2 :(得分:0)
尝试在Activity中添加onActivityResult,这个将在调用super时调用并调度到片段:
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
}