[移动开发]Android 子线程无法更改UI解决方法

//在子线程中使用 runOnUiThread 在UI线程执行
runOnUiThread()

runOnUiThread(updateThread);

Runnable updateThread = new Runnable()
    {
        @Override
        public void run()
        {
           //TODO
        }
    };

示例：

        new Thread(new Runnable() {
            @Override
            public void run() {
                String url = "url";
                OkHttpClient okHttpClient = new OkHttpClient();
                Request request = new Request.Builder()
                        .url(url)
                        .get()	//默认就是GET请求，可以省略
                        .build();
                Call call = okHttpClient.newCall(request);
                call.enqueue(new Callback() {
                    @Override
                    public void onFailure(Call call, IOException e) {
                        Log.d(TAG, "onFailure: ");
                    }
                    @Override
                    public void onResponse(Call call, Response response) throws IOException {
                        //response.body().string() 获得服务器返回的数据
            //                Log.d(TAG, "onResponse: " + response.body().string());
                        try{
                            JSONArray jsonArray=new JSONArray(response.body().string());
                            for(int i=0;i<jsonArray.length();i++)
                            {
                                JSONObject jsonObject=jsonArray.getJSONObject(i);
                                Integer id=jsonObject.getInt("id");
                                ProjectList.add(new Project(id));
                            }
                            //在UI线程执行
                            WorkbenchActivity.this.runOnUiThread(updateThread);
                        } catch (JSONException e) {
                            e.printStackTrace();
                        }
                    }
                });
//                ProjectList = OkHttp.projectList();
            }
        }).start();
	};
 
    Runnable updateThread = new Runnable()
    {
        @Override
        public void run()
        {
            //更新UI
            if (ProjectList != null) {
                ProjectAdapter adapter=new ProjectAdapter(WorkbenchActivity.this,R.layout.project_list_item,ProjectList);
                // 将适配器上的数据传递给listView
                listView.setAdapter(adapter);
            } else {
                System.out.println("数据错误！");
            }
        }

    };