版权声明：本文为博主原创文章，转载请标明出处。 https://blog.csdn.net/lyhhj/article/details/47153137
Android中线程的使用很重要，有时候线程使用不好直接导致线程卡死，软件崩溃。下面分享一下我再开发时对线程的理解，如果有错误还希望大家多多指正。当一个Activity被创建之后，一个线程就算开启了，也就是主线程或者UI线程，主线程中只负责更新界面，而子线程中才会去执行一些复杂的业务。在Android中线程的使用我用的最多的是这三种：Thread、Runnable、Handler1.Thread 通过集成Thread用run方法来实现线程
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public class MyThread extends Thread {
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private final static String TAG = "My Thread ===> ";
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public void run(){
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Log.d(TAG, "run");
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for(int i = 0; i<100; i++)
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{
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Log.e(TAG, Thread.currentThread().getName() + "i = " + i);
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}
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}
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}
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用start（）方法开启线程2.Runnable
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public class MyRunnable implements Runnable{
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private final static String TAG = "My Runnable ===> ";
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@Override
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public void run() {
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// TODO Auto-generated method stub
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Log.d(TAG, "run");
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for(int i = 0; i<1000; i++)
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{
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Log.e(TAG, Thread.currentThread().getName() + "i = " + i);
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}
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}
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}
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3.Handler
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public class MainActivity extends Activity {
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private final static String TAG = "UOfly Android Thread ==>";
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private int count = 0;
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private Handler mHandler = new Handler();
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private Runnable mRunnable = new Runnable() {
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public void run() {
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Log.e(TAG, Thread.currentThread().getName() + " " + count);
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count++;
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setTitle("" + count);
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// 每3秒执行一次
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mHandler.postDelayed(mRunnable, 3000); //给自己发送消息，自运行
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}
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};
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/** Called when the activity is first created. */
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@Override
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public void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.main);
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// 通过Handler启动线程
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mHandler.post(mRunnable); //发送消息，启动线程运行
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}
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@Override
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protected void onDestroy() {
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//将线程销毁掉
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mHandler.removeCallbacks(mRunnable);
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super.onDestroy();
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}
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}
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这三种线程通常使用的比较多