Question

android 判断应用是 在前台运行 还是在后台运行 csdn

Answer 1

rt android.app.ActivityManager.RunningAppProcessInfo;
import android.content.Context;
import android.os.Bundle;

/**
* 判断应用程序在前台还是在后台运行
*/
public class MainActivity extends Activity {

private Boolean isActive;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
isActive = isAppOnForeground();
}