我无法以这种方式替换片段:
A2Fragment a2Fragment = new A2Fragment();
FragmentTransaction transaction = getChildFragmentManager().beginTransaction();
transaction.addToBackStack(null);
transaction.replace(R.id.fragment_mainLayout, a2Fragment).commit();
在第一个片段上添加第二个片段。我尝试了很多解决方案,但总是会发生同样的情况。我现在读到,不可能替换从布局XML文件添加的片段,并且应该以编程方式添加它以便可以替换它。这是真的吗?
我现在在onCreateView上尝试了这个并且工作了。
Context context = getActivity();
LinearLayout base = new LinearLayout(context);
base.setOrientation(LinearLayout.VERTICAL);
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT);
base.setLayoutParams(params);
TextView text = new TextView(context);
text.setGravity(Gravity.CENTER);
String title;
text.setText("Pager: ");
text.setTextSize(20 * getResources().getDisplayMetrics().density);
text.setPadding(20, 20, 20, 20);
params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
text.setLayoutParams(params);
FrameLayout layout = new FrameLayout(getActivity());
layout.setId(fragmentId);
params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, 0);
params.weight = 1;
layout.setLayoutParams(params);
layout.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
FragmentManager manager = getFragmentManager();
FragmentTransaction transaction = manager.beginTransaction();
transaction.replace(fragmentId,new A2Fragment());
transaction.addToBackStack(null);
transaction.commit();
}
});
layout.addView(text);
base.addView(layout);
return base;
答案 0 :(得分:2)
您可以在xml中创建一个片段,然后以编程方式替换它。
创建XML。这个xml只包含一个片段。您可以通过引用其完全限定的类名来使用您创建的片段。
public void swapContentFragment(Fragment fragment) {
FragmentTransaction transaction = mFragmentManager.beginTransaction();
transaction.replace(R.id.fragment_container, fragment, "tagname");
transaction.addToBackStack("tagname");
transaction.commitAllowingStateLoss();
}
使用片段事务更改片段。
plusOne =
(+) 1