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\u9019\u88e1\u76f4\u63a5\u4f7f\u7528new Thread\u7684\u65b9\u5f0f\u958b\u555f\u57f7\u884c\u7dd2\uff0c\u4e26\u900f\u904eThread.sleep(1000)\u4f86\u6a21\u64ec\u8017\u6642\u64cd\u4f5c\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n\n\n\n
public class MainActivity extends AppCompatActivity {\n\n private Button btnThread;\n\n private TextView textView;\n\n @Override\n protected void onCreate(Bundle savedInstanceState) {\n super.onCreate(savedInstanceState);\n setContentView(R.layout.activity_main);\n\n textView = (TextView) findViewById(R.id.textView);\n btnThread = (Button) findViewById(R.id.btnThread);\n\n btnThread.setOnClickListener(new View.OnClickListener() {\n @Override\n public void onClick(View view) {\n \/\/ \u6309\u4e0b\u6309\u9215\u6a21\u64ec\u57f7\u884c\u8017\u6642\u64cd\u4f5c\n threadRun();\n }\n });\n }\n\n private void threadRun() {\n \/\/ \u958b\u555f\u57f7\u884c\u7dd2\uff0c\u4e26\u5ef6\u9072\u4e00\u79d2\n new Thread(new Runnable() {\n @Override\n public void run() {\n Log.e(TAG, \"Thread\" + Thread.currentThread().getName());\n try {\n Thread.sleep(1000);\n } catch (InterruptedException e) {\n e.printStackTrace();\n }\n \/\/ UI\u66f4\u65b0\u6642\uff0c\u5207\u56de\u4e3b\u57f7\u884c\u7dd2\n runOnUiThread(\n new Runnable() {\n @Override\n public void run() {\n Log.e(TAG, \"Thread\" + Thread.currentThread().getName());\n textView.setText(\"Thread finished...\");\n }\n });\n }\n }).start();\n }\n}<\/code><\/pre>\n\n\n\n\u53ef\u4ee5\u900f\u904eLogcat\u770b\u5230\u57f7\u884c\u7dd2\u7684\u5207\u63db\u72c0\u6cc1\u5982\u4e0b\uff1a<\/p>\n\n\n\n
E\/MainActivity: ThreadBackground Worker\nE\/MainActivity: Threadmain<\/code><\/pre>\n\n\n\n<\/p>\n\n\n\n
\u4f7f\u7528\u65b9\u5f0f2<\/h2>\n\n\n\n
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public class MainActivity extends AppCompatActivity {\n\n private static final String TAG = MainActivity.class.getSimpleName();\n\n private Button btnThread;\n\n private TextView textView;\n\n private Handler mHandler;\n\n private HandlerThread mBackgroundThread;\n\n @Override\n protected void onCreate(Bundle savedInstanceState) {\n super.onCreate(savedInstanceState);\n setContentView(R.layout.activity_main);\n\n mBackgroundThread = new HandlerThread(\"Background Worker\");\n mBackgroundThread.start();\n\n mHandler = new Handler(mBackgroundThread.getLooper());\n\n textView = (TextView) findViewById(R.id.textView);\n btnThread = (Button) findViewById(R.id.btnThread);\n\n btnThread.setOnClickListener(new View.OnClickListener() {\n @Override\n public void onClick(View view) {\n \/\/ \u6309\u4e0b\u6309\u9215\u6a21\u64ec\u57f7\u884c\u8017\u6642\u64cd\u4f5c\n threadRun();\n }\n });\n }\n\n private void threadRun() {\n mHandler.post(new Runnable() {\n @Override\n public void run() {\n Log.e(TAG, \"Thread\" + Thread.currentThread().getName());\n try {\n Thread.sleep(1000);\n } catch (InterruptedException e) {\n e.printStackTrace();\n }\n\n runOnUiThread(\n new Runnable() {\n @Override\n public void run() {\n Log.e(TAG, \"Thread\" + Thread.currentThread().getName());\n textView.setText(\"Thread finished...\");\n }\n }\n );\n }\n });\n }\n}\n<\/code><\/pre>\n\n\n\n \u53ef\u4ee5\u900f\u904eLogcat\u770b\u5230\u57f7\u884c\u7dd2\u7684\u5207\u63db\u72c0\u6cc1\u5982\u4e0b\uff1a <\/p>\n\n\n\n
E\/MainActivity: ThreadBackground Worker\nE\/MainActivity: Threadmain<\/code><\/pre>\n\n\n\n<\/p>\n\n\n\n
\u4f7f\u7528\u65b9\u5f0f3<\/h2>\n\n\n\n
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public class MainActivity extends AppCompatActivity {\n\n private static final String TAG = MainActivity.class.getSimpleName();\n\n private Button btnThread;\n\n private TextView textView;\n\n private MyAsyncTask asyncTask;\n\n @Override\n protected void onCreate(Bundle savedInstanceState) {\n super.onCreate(savedInstanceState);\n setContentView(R.layout.activity_main);\n\n textView = (TextView) findViewById(R.id.textView);\n btnThread = (Button) findViewById(R.id.btnThread);\n\n btnThread.setOnClickListener(new View.OnClickListener() {\n @Override\n public void onClick(View view) {\n \/\/ \u6309\u4e0b\u6309\u9215\u6a21\u64ec\u57f7\u884c\u8017\u6642\u64cd\u4f5c\n threadRun();\n }\n });\n }\n\n private void threadRun() {\n asyncTask = new MyAsyncTask();\n asyncTask.execute();\n }\n\n private class MyAsyncTask extends AsyncTask<Void, Void, String> {\n\n @Override\n protected void onPreExecute() {\n textView.setText(\"AsyncTask Start\");\n Log.e(TAG, \"AsyncTask start... Thread: \" + Thread.currentThread().getName());\n }\n\n @Override\n protected String doInBackground(Void... params) {\n try {\n Thread.sleep(1000);\n } catch (InterruptedException e) {\n Log.e(TAG, e.toString());\n }\n Log.e(TAG, \"AsyncTask doInBackground... Thread: \" + Thread.currentThread().getName());\n return \"Thread finished...\";\n }\n\n @Override\n protected void onProgressUpdate(Void... values) {\n textView.setText(\"AsyncTask running...\");\n }\n\n @Override\n protected void onPostExecute(String result) {\n textView.setText(result);\n Log.e(TAG, \"AsyncTask onPostExecute... Thread: \" + Thread.currentThread().getName());\n }\n }\n}\n<\/code><\/pre>\n\n\n\n\u900f\u904e\u89c0\u5bdfLogcat\u8a0a\u606f\uff0c\u53ef\u4ee5\u770b\u5230\u57f7\u884c\u7dd2\u5207\u63db\u7684\u72c0\u6cc1\uff1a<\/p>\n\n\n\n
E\/MainActivity: AsyncTask start... Thread: main\nE\/MainActivity: AsyncTask doInBackground... Thread: AsyncTask #1\nE\/MainActivity: AsyncTask onPostExecute... Thread: main<\/code><\/pre>\n\n\n\n<\/p>\n","protected":false},"excerpt":{"rendered":"
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