fix(app): cannot navigation up by clicking the back button on ActionBar

Trumeet · Trumeet · commit 52586c4cad4a · 2018-12-22T11:34:08.000-08:00
Signed-off-by: Trumeet &lt;17158086+Trumeet@users.noreply.github.com&gt;
diff --git a/app/src/main/java/moe/yuuta/mipushtester/MainActivity.java b/app/src/main/java/moe/yuuta/mipushtester/MainActivity.java
@@ -14,4 +14,9 @@ protected void onCreate(@Nullable Bundle savedInstanceState) {
         setContentView(R.layout.activity_main);
         NavigationUI.setupActionBarWithNavController(this, Navigation.findNavController(this, R.id.nav_host));
     }
+
+    @Override
+    public boolean onSupportNavigateUp() {
+        return Navigation.findNavController(this, R.id.nav_host).navigateUp();
+    }
 }

Original file line number	Diff line number	Diff line change
`@@ -14,4 +14,9 @@ protected void onCreate(@Nullable Bundle savedInstanceState) {`
`14`	`14`	`setContentView(R.layout.activity_main);`
`15`	`15`	`NavigationUI.setupActionBarWithNavController(this, Navigation.findNavController(this, R.id.nav_host));`
`16`	`16`	`}`
	`17`	`+`
	`18`	`+ @Override`
	`19`	`+ public boolean onSupportNavigateUp() {`
	`20`	`+ return Navigation.findNavController(this, R.id.nav_host).navigateUp();`
	`21`	`+ }`
`17`	`22`	`}`