防止Android上的屏幕旋转

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我是靠谱客的博主热心帽子，最近开发中收集的这篇文章主要介绍防止Android上的屏幕旋转，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

本文翻译自：Prevent screen rotation on Android

I have one of my activities which I would like to prevent from rotating because I'm starting an AsyncTask, and screen rotation makes it restart. 我有一个我想阻止其旋转的活动，因为我正在启动AsyncTask，并且屏幕旋转使其重新启动。

Is there a way to tell this activity "DO NOT ROTATE the screen even if the user is shaking his phone like mad"? 有没有办法告诉此活动“即使用户疯狂地摇晃手机也不要旋转屏幕”？

#1楼

参考：https://stackoom.com/question/BSQ3/防止Android上的屏幕旋转

#2楼

Activity.java Activity.java

@Override
public void onConfigurationChanged(Configuration newConfig) {
try {
super.onConfigurationChanged(newConfig);
if (this.getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE) {
// land
} else if (this.getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) {
// port
}
} catch (Exception ex) {
}

AndroidManifest.xml AndroidManifest.xml

 <application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name="QRCodeActivity" android:label="@string/app_name"
android:screenOrientation="landscape" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>

#3楼

The following attribute on the ACTIVITY in AndroidManifest.xml is all you need: 您仅需要AndroidManifest.xml中ACTIVITY上的以下属性：

android:configChanges="orientation"

So, the full activity node would be: 因此，完整的活动节点将是：

<activity android:name="Activity1"
android:icon="@drawable/icon"
android:label="App Name"
android:excludeFromRecents="true"
android:configChanges="orientation">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>

#4楼

In your Manifest file, for each Activity that you want to lock the screen rotation add: if you want to lock it in horizontal mode: 在清单文件中，为要锁定屏幕旋转的每个活动添加：如果要以水平模式锁定它：

<activity
...
...
android:screenOrientation="landscape">

or if you want to lock it in vertical mode: 或者如果您想将其锁定在垂直模式下：

<activity
...
...
android:screenOrientation="portrait">

#5楼

If you are using Android Developer Tools (ADT) and Eclipse you can go to your AndroidManifest.xml --> Application tab --> go down and select your activity. 如果您使用的是Android开发人员工具（ADT）和Eclipse ，则可以转到AndroidManifest.xml-> 应用程序选项卡->向下并选择您的活动。 Finally, select your preferred orientation. 最后，选择您的首选方向。 You can select one of the many options. 您可以选择许多选项之一。

#6楼

The easiest way I found to do this was to put 我发现做到这一点的最简单方法是

this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);

within onCreate, just after 在onCreate内

setContentView(R.layout.activity_main);

so... 所以...

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
}