Android Get Settings Screen portrait

Method One:

Screenorientation = Application.getresources (). GetConfiguration (). Orientation;

Method Two:

Screenorientation = Activity.getrequestedorientation (); Gets the direction of the current activity

Dynamic setting Screen:

Setrequestedorientation (activityinfo.screen_orientation_portrait);

Life cycle:

1. Toggle Screen

(1) No configchanges

Oncreate-->

Onstart-->
Onresume-->

----------Switch--------

Onsaveinstancestate-->
Onpause-->
Onstop-->
Ondestroy-->
Oncreate-->
Onstart-->
Onrestoreinstancestate-->
Onresume-->

-----------Switch--------

Onsaveinstancestate-->
Onpause-->
Onstop-->
Ondestroy-->
Oncreate-->
Onstart-->
Onrestoreinstancestate-->
Onresume-->
Onsaveinstancestate-->
Onpause-->
Onstop-->
Ondestroy-->
Oncreate-->
Onstart-->
Onrestoreinstancestate-->
Onresume-->

(2) Modify the Androidmanifest.xml, add the activity android:configchanges= "orientation", perform step 3

Onsaveinstancestate-->
Onpause-->
Onstop-->
Ondestroy-->
Oncreate-->
Onstart-->
Onrestoreinstancestate-->
Onresume-->

Perform step 4 again to find that the same information is no longer printed, but one line is printed more onconfigchanged

Onsaveinstancestate-->
Onpause-->
Onstop-->
Ondestroy-->
Oncreate-->
Onstart-->
Onrestoreinstancestate-->
Onresume-->
Onconfigurationchanged-->

(3) Change to android:configchanges= "Orientation|screensize|keyboardhidden" (sdk>13 need to add screensize), perform step 3, Just print onconfigchanged

Onconfigurationchanged-->

Perform step 4

Onconfigurationchanged-->
Onconfigurationchanged-->

Summarize:

1, do not set the activity of the android:configchanges, the screen will recall the various life cycle, cut across the screen will be executed once, cut the vertical screen will be executed twice

2, set the activity android:configchanges= "orientation", the screen will recall the various life cycle, cut horizontal, vertical screen will only be executed once

2, set the activity android:configchanges= "Keyboardhidden", the screen will recall the various life cycle, cut horizontal, vertical screen will only be executed once

3, set the activity android:configchanges= "Orientation|screensize|keyboardhidden", the screen will not recall the various life cycle, Only the Onconfigurationchanged method is executed

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Android Get Settings Screen portrait