注意：前提是界面二被打开过未关闭，则用此方法即可实现在界面一中调用界面二的方法！


界面一：

public class OneActivityextends Activity {

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_one);

callTwoActivityMethod();

}


//调用另一个界面的方法

private void callTwoActivityMethod(){

if(TwoActivity.getObj()!=null){

TwoActivity.getObj().refresh();

}

}

}


界面二：

public class TwoActivityextends Activity {

private staticTwoActivity mTwoActivity;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_two);

mTwoActivity=this;

}


public staticTwoActivity getObj(){

return mTwoActivity;

}

//需要被调用的方法

public void refresh(){

//............

log.i("refresh","界面二的方法被调用");

}

}