android 线程之创建一个子线程，并在UI线程中进行交互

ゝ一纸荒年。 2023-06-18 08:59 199阅读 0赞

package littest.ghq.com.test;
    
    import android.support.v7.app.AppCompatActivity;
    import android.os.Bundle;
    import android.util.Log;
    import android.view.View;
    import android.widget.Button;
    import android.widget.TextView;
    import android.widget.Toast;
    
    import com.loopj.android.http.AsyncHttpClient;
    import com.loopj.android.http.AsyncHttpResponseHandler;
    import com.loopj.android.http.RequestParams;
    
    import org.apache.http.Header;
    
    public class MainActivity extends AppCompatActivity {
    
        private String TAG = "线程示例";
        private  Button btn_start,btn_end;
        private  Thread clockThread;
        private TextView tvtime;
        private boolean isRuning = false;
        private int timer = 0;
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            btn_start =(Button)findViewById(R.id.btn_start);
            btn_start.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    isRuning=true;
                    clockThread.start();//启动这个线程
                }
            });
    
            btn_end = (Button)findViewById(R.id.btn_end);
            btn_end.setOnClickListener(new View.OnClickListener(){
                @Override
                public void onClick(View view) {
                   isRuning=false;
                }
            });
            tvtime = (TextView)findViewById(R.id.tv_time);
            clockThread = new Thread(new Runnable() {
                @Override
                public void run() {
                    while(isRuning){
                        try{
                            Thread.currentThread().sleep(1000);
                            timer++;
                            tvtime.post(new Runnable() {
                                @Override
                                public void run() {
                                    tvtime.setText("时间过去了："+timer+"秒");
                                }
                            });
                        }catch (InterruptedException e){
                            e.printStackTrace();
                        }
                    }//线程结束后就不能再次执行
                }
            });
        }
    }

不想写安卓 想去看电影