新建一个java继承Application类
import android.app.Application;
import android.content.Context; /**
* 编写自定义Application,管理全局状态信息,比如Context
* @author autumn
*/
public class MyApplication extends Application {
private static Context context; @Override
public void onCreate() {
super.onCreate();
//获取Context
context = getApplicationContext();
} //返回
public static Context getContextObject(){
return context;
}
}
在AndroidManifest.xml中注册,在application标签中添加android:name="com.***.MyApplication"即可
<application
android:name="com.***.MyApplication"
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
</application>
调用获取全局Context
MyApplication.getContextObject();