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android实现App活动定时自动跳转效果

  • 时间:2022-07-03 03:30 编辑: 来源: 阅读:
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摘要:android实现App活动定时自动跳转效果
App的小功能点,很简单几十行代码就可以实现 主页面代码
package com.buildingbuilding;

import android.content.Intent;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.WindowManager;
import android.widget.TextView;

import com.buildingbuilding.activitys.BuildingActivity;

public class MainActivity extends AppCompatActivity {
  private TextView textView;
  private Handler handler = new Handler() {
    @Override
    public void handleMessage(Message msg) {
      if (msg.what != 0) {
        textView.setText(msg.what + "秒后进入APP");
      } else {
        Intent intent = new Intent(MainActivity.this, BuildingActivity.class);
        startActivity(intent);
        finish();
      }
    }
  };
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    init();
  }

  private void init() {
    //全屏显示
    getSupportActionBar().hide();
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);

    textView = (TextView) findViewById(R.id.textView);
    textView.setText("布丁布丁");

    new CountDown().start();
  }

  //进入APP倒计时
  class CountDown extends Thread {
    int count = 3;
    @Override
    public void run() {
      try {
        while (count >= 0) {
          sleep(1000);
          Message message = new Message();
          message.what = count;
          handler.sendMessage(message);
          count--;
        }
      } catch (InterruptedException e) {
        e.printStackTrace();
      }

    }
  }
}

基本思路就是,通过一个计时线程来控制主线程(即UI线程)来更新UI 通过Handler来接受来自计时线程的Message
private Handler handler = new Handler() {
    @Override
    public void handleMessage(Message msg) {
      if (msg.what != 0) {
        textView.setText(msg.what + "秒后进入APP");
      } else {
        Intent intent = new Intent(MainActivity.this, BuildingActivity.class);
        startActivity(intent);
        finish();
      }
    }
  };
2.计时线程(内部类),设置每隔1秒睡一次,共3秒
//进入APP倒计时
  class CountDown extends Thread {
    int count = 3;
    @Override
    public void run() {
      try {
        while (count >= 0) {
          sleep(1000);
          Message message = new Message();
          message.what = count;
          handler.sendMessage(message);
          count--;
        }
      } catch (InterruptedException e) {
        e.printStackTrace();
      }

    }
  }

3.最后别忘了在init()方法中启动线程
private void init() {
    //全屏显示
    getSupportActionBar().hide();
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);

    textView = (TextView) findViewById(R.id.textView);
    textView.setText("布丁布丁");

    new CountDown().start();
  }

OK,现在基本都完成了,来看效果 [img]http://files.jb51.net/file_images/article/201702/201702170818241.png[/img]   [img]http://files.jb51.net/file_images/article/201702/201702170818242.png[/img]   [img]http://files.jb51.net/file_images/article/201702/201702170818243.png[/img]   [img]http://files.jb51.net/file_images/article/201702/201702170818254.png[/img] 以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持编程素材网。
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