android實現(xiàn)App活動定時自動跳轉效果

更新時間：2017年02月17日 08:23:36 作者：小黃鴨會發(fā)光丶

本篇文章主要介紹了android實現(xiàn)App活動定時自動跳轉效果，小編覺得挺不錯的，現(xiàn)在分享給大家，也給大家做個參考。一起跟隨小編過來看看吧

App的小功能點，很簡單幾十行代碼就可以實現(xiàn)

主頁面代碼

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 + "秒后進入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() {
    //全屏顯示
    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();
  }

  //進入APP倒計時
  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，通過一個計時線程來控制主線程（即UI線程）來更新UI

通過Handler來接受來自計時線程的Message

private Handler handler = new Handler() {
    @Override
    public void handleMessage(Message msg) {
      if (msg.what != 0) {
        textView.setText(msg.what + "秒后進入APP");
      } else {
        Intent intent = new Intent(MainActivity.this, BuildingActivity.class);
        startActivity(intent);
        finish();
      }
    }
  };

2.計時線程（內部類），設置每隔1秒睡一次，共3秒

//進入APP倒計時
  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.最后別忘了在init（）方法中啟動線程

private void init() {
    //全屏顯示
    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，現(xiàn)在基本都完成了，來看效果

這里寫圖片描述