see 10/07 log

app/src/main/java/com/blankj/androidutilcode/core/fragment/ChildFragment.java

@@ -21,7 +21,7 @@ import java.util.Random;
  * </pre>
  */
 public class ChildFragment extends BaseFragment
-        implements FragmentUtils.OnBackClickListener{
+        implements FragmentUtils.OnBackClickListener {
 
     private TextView tvAboutFragment;
 
@@ -61,10 +61,10 @@ public class ChildFragment extends BaseFragment
         tvAboutFragment.setText("");
         switch (view.getId()) {
             case R.id.btn_show_about_fragment:
-                tvAboutFragment.setText("lastAdd: " + FragmentUtils.getTop(getFragmentManager()).getClass().getSimpleName()
-                        + "\nlastAddInStack: " + (FragmentUtils.getTopInStack(getFragmentManager()) != null ? FragmentUtils.getTopInStack(getFragmentManager()).getClass().getSimpleName() : "null")
-                        + "\ntopShow: " + FragmentUtils.getTopShow(getFragmentManager()).getClass().getSimpleName()
-                        + "\ntopShowInStack: " + (FragmentUtils.getTopShowInStack(getFragmentManager()) != null ? FragmentUtils.getTopShowInStack(getFragmentManager()).getClass().getSimpleName() : "null")
+                tvAboutFragment.setText("top: " + FragmentUtils.getSimpleName(FragmentUtils.getTop(getFragmentManager()))
+                        + "\ntopInStack: " + FragmentUtils.getSimpleName(FragmentUtils.getTopInStack(getFragmentManager()))
+                        + "\ntopShow: " + FragmentUtils.getSimpleName(FragmentUtils.getTopShow(getFragmentManager()))
+                        + "\ntopShowInStack: " + FragmentUtils.getSimpleName(FragmentUtils.getTopShowInStack(getFragmentManager()))
                         + "\n---all of fragments---\n"
                         + FragmentUtils.getAllFragments(getFragmentManager()).toString()
                         + "\n----------------------\n\n"

app/src/main/java/com/blankj/androidutilcode/core/fragment/FragmentActivity.java

@@ -75,12 +75,12 @@ public class FragmentActivity extends BaseActivity {
     }
 
 
-    @Override
-    public void onBackPressed() {
-//        if (!FragmentUtils.dispatchBackPress(getSupportFragmentManager())) {
-//            super.onBackPressed();
-//        }
-    }
+//    @Override
+//    public void onBackPressed() {
+////        if (!FragmentUtils.dispatchBackPress(getSupportFragmentManager())) {
+////            super.onBackPressed();
+////        }
+//    }
 
     private BottomNavigationView.OnNavigationItemSelectedListener mOnNavigationItemSelectedListener
             = new BottomNavigationView.OnNavigationItemSelectedListener() {

app/src/main/java/com/blankj/androidutilcode/core/fragment/RootFragment.java

@@ -75,10 +75,10 @@ public class RootFragment extends BaseFragment
         tvAboutFragment.setText("");
         switch (view.getId()) {
             case R.id.btn_show_about_fragment:
-                tvAboutFragment.setText("top: " + FragmentUtils.getTop(getFragmentManager()).getClass().getSimpleName()
-                        + "\ntopInStack: " + (FragmentUtils.getTopInStack(getFragmentManager()) != null ? FragmentUtils.getTopInStack(getFragmentManager()).getClass().getSimpleName() : "null")
-                        + "\ntopShow: " + (FragmentUtils.getTopShow(getFragmentManager()) != null ? FragmentUtils.getTopShow(getFragmentManager()).getClass().getSimpleName() : "null")
-                        + "\ntopShowInStack: " + (FragmentUtils.getTopShowInStack(getFragmentManager()) != null ? FragmentUtils.getTopShowInStack(getFragmentManager()).getClass().getSimpleName() : "null")
+                tvAboutFragment.setText("top: " + FragmentUtils.getSimpleName(FragmentUtils.getTop(getFragmentManager()))
+                        + "\ntopInStack: " + FragmentUtils.getSimpleName(FragmentUtils.getTopInStack(getFragmentManager()))
+                        + "\ntopShow: " + FragmentUtils.getSimpleName(FragmentUtils.getTopShow(getFragmentManager()))
+                        + "\ntopShowInStack: " + FragmentUtils.getSimpleName(FragmentUtils.getTopShowInStack(getFragmentManager()))
                         + "\n---all of fragments---\n"
                         + FragmentUtils.getAllFragments(getFragmentManager()).toString()
                         + "\n----------------------\n\n"

utilcode/src/main/java/com/blankj/utilcode/util/FragmentUtils.java

@@ -779,11 +779,12 @@ public final class FragmentUtils {
             Log.e("FragmentUtils", src.getClass().getName() + " is isRemoving");
             return;
         }
-        String name = dest.getClass().getName();
+        String name;
         Bundle args;
         switch (type) {
             case TYPE_ADD_FRAGMENT:
                 for (Fragment fragment : dest) {
+                    name = fragment.getClass().getName();
                     args = fragment.getArguments();
                     Fragment fragmentByTag = fm.findFragmentByTag(name);
                     if (fragmentByTag != null) {
@@ -815,6 +816,7 @@ public final class FragmentUtils {
                 }
                 break;
             case TYPE_REPLACE_FRAGMENT:
+                name = dest[0].getClass().getName();
                 args = dest[0].getArguments();
                 ft.replace(args.getInt(ARGS_ID), dest[0], name);
                 if (args.getBoolean(ARGS_IS_ADD_STACK)) ft.addToBackStack(name);
@@ -883,8 +885,10 @@ public final class FragmentUtils {
         for (int i = fragments.size() - 1; i >= 0; --i) {
             Fragment fragment = fragments.get(i);
             if (fragment != null) {
-                if (isInStack && fragment.getArguments().getBoolean(ARGS_IS_ADD_STACK)) {
-                    return fragment;
+                if (isInStack) {
+                    if (fragment.getArguments().getBoolean(ARGS_IS_ADD_STACK)) {
+                        return fragment;
+                    }
                 } else {
                     return fragment;
                 }
@@ -922,11 +926,13 @@ public final class FragmentUtils {
                     && fragment.isResumed()
                     && fragment.isVisible()
                     && fragment.getUserVisibleHint()) {
-                if (isInStack && fragment.getArguments().getBoolean(ARGS_IS_ADD_STACK)) {
+                if (isInStack) {
+                    if (fragment.getArguments().getBoolean(ARGS_IS_ADD_STACK)) {
+                        return fragment;
+                    }
+                } else {
                     return fragment;
                 }
-            } else {
-                return fragment;
             }
         }
         return null;
@@ -1099,6 +1105,16 @@ public final class FragmentUtils {
         ViewCompat.setBackground(fragment.getView(), background);
     }
 
+    /**
+     * 获取类名
+     *
+     * @param fragment fragment
+     * @return 类名
+     */
+    public static String getSimpleName(final Fragment fragment) {
+        return fragment == null ? "null" : fragment.getClass().getSimpleName();
+    }
+
     private static class Args {
         int     id;
         boolean isHide;