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android中listview学习与记录简单的文字列表布局文件<?xml version="1.0" encoding="utf-8"?><androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto"

new Thread(){ @Override public void run() { try { FTPClient ftpClient = new FTPClient(); FileInputStream fis; ftpClient.setConnectTimeout(3000);

android简单的日期时间选择器在build.gradle中导入implementation 'com.contrarywind:Android-PickerView:3.2.7'xml中设置一个TextView，用来触发及最终显示日期时间结果<TextView android:id="@+id/start_day" android:layout_widt...

android fragment切换1、调用方式xml布局<FrameLayout android:layout_width="match_parent" android:layout_height="match_parent" android:id="@+id/frame_layout" ></FrameLa...

LISTVIEW学习MainActivity.javapublic class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); ...

android 自定义listviewMainActivity.javapublic class MainActivity extends AppCompatActivity { private ListView listView; private ItemAdapter itemAdapter;//自定义的适配器 private List&lt;Item&gt; ar...

android使用mediarecord进行简单的录音布局文件<Button android:id="@+id/btn_control" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="开始录音" /...