Activity02.java

package com.droid.carson;

import com.qingmu.jianzhidaren.R;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;


public class Activity02 extends Activity {
    private OverlayThread overlayThread;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main_2);

    }

    // 设置overlay不可见
    private class OverlayThread implements Runnable {
        @Override
        public void run() {
            tin.getCityName("上海");
        }

    }

    public void go(View v) {
        Intent intent = new Intent(Activity02.this, Activity01.class);
        startActivity(intent);
        overlayThread = new OverlayThread();
        Handler handler = new Handler();
        handler.postDelayed(overlayThread, 3000);
    }

    static LocateIn tin;

    public static void setLocateIn(LocateIn in) {
        tin = in;
    }

    public interface LocateIn {
        public void getCityName(String name);
    }
}