一对一视频聊天APP源码，使用Handler开启倒计时相关的代码

import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
public class MainActivity extends AppCompatActivity {
    private int count=5;
    private Handler handler = new Handler(new Handler.Callback() {
        @Override
        public boolean handleMessage(@NonNull Message msg) {
            //倒计时  五 四 三 二 一
            String[] str = new String[]{"一","二","三","四","五"};
            tv_text.setText(str[count]);
            return false;
        }
    });
    private TextView tv_text;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initView();
    }
    private void initView() {
        tv_text = (TextView) findViewById(R.id.tv_text);
        new Thread(new Runnable() {
            @Override
            public void run() {
                while (count>0){
                    try {
                        Thread.sleep(1000);
                        handler.sendEmptyMessage(0);
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                    count--;
                }
                Intent intent = new Intent(MainActivity.this, HomeActivity.class);
                startActivity(intent);
            }
        }).start();
    }
}

以上就是一对一视频聊天APP源码，使用Handler开启倒计时相关的代码， 更多内容欢迎关注之后的文章