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RSS订阅原创 封装OkHttp
OkHttpUtils封装的四个方法: public class OkHttpUtils { OkHttpClient okHttpClient; Handler handler = new Handler(); private OkHttpUtils() { okHttpClient = new OkHttpClient.Builder() ...
2019-09-27 17:22:17
142
原创 网络下载Json和图片存到SD卡，并读取
主页面按钮设置点击事件 public class MainActivity extends AppCompatActivity { private Button writeJson; private Button readJson; private Button writeImage; private Button readImage; private ...
2019-09-06 20:59:48
128
原创 第五单元
主页面按钮点击切换碎片 public class MainActivity extends AppCompatActivity { private RadioButton button1; private RadioButton button2; private RadioButton button3; private RadioButton button4; ...
2019-09-04 21:41:26
110
原创 第四单元
动态添加Fragment FragmentManager fragmentManager = getSupportFragmentManager(); FragmentTransaction transaction = fragmentManager.beginTransaction(); transaction.add(R.id.fl,contactFragm...
2019-09-03 20:01:01
81
原创 第三单元
显示ListView 展示数据 public class DataActivity extends AppCompatActivity { ArrayList<FoodBean.DataBean> list = MainActivity.list; private ListView listView; private MyAdapter adapter; ...
2019-09-02 23:33:54
259
原创 第一单元
作业一 //时间 private void time_dialog() { Calendar instance = Calendar.getInstance(); new TimePickerDialog(this, new TimePickerDialog.OnTimeSetListener() { @Override ...
2019-08-30 21:29:20
93
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