全局获得Context的方法

首先创建一个类继承Application

public class MyApplication extends Application{
	private static Context context;
	@Override
	public void onCreate(){
		context=getApplicationContext();
	}
	public static Context getContext(){
		return context;
	{
}

然后在AndroidManifest.xml的 < application>标签指定即可

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
          package="com.cczhr.mydemo" >
		   <application
				...
				...
				android:name="com.cczhr.mydemo.MyApplication">
		   </application>
</manifest>

以后需要传入Context只需要写上即可

MyApplication.getContext();