Android Implementation of App Activity Timing Automatic Transfer Effect

Small features of the APP, very simple, can be realized with just a few lines of code

Main page code

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 + "Enter APP after seconds");
      } 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() {
    //Full Screen Display
    getSupportActionBar().hide();
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
    textView = (TextView) findViewById(R.id.textView);
    textView.setText("Pudding Pudding");
    new CountDown().start();
  }
  //Count down to enter the APP
  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--;
        }
      }
        e.printStackTrace();
      }
    }
  }
}

The basic idea is to control the main thread (i.e., the UI thread) to update the UI through a timer thread

Accept messages from the timer thread through Handler

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

2.Timer thread (inner class), set every1sleep for one second, a total of3second

//Count down to enter the APP
  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--;
        }
      }
        e.printStackTrace();
      }
    }
  }

3.Do not forget to start the thread in the init() method at last

private void init() {
    //Full Screen Display
    getSupportActionBar().hide();
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
    textView = (TextView) findViewById(R.id.textView);
    textView.setText("Pudding Pudding");
    new CountDown().start();
  }

OK, it's basically done now, let's see the effect

　

　

　

That's all for this article. I hope it will be helpful to everyone's study and also hope everyone will support the Yelling Tutorial more.

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