依赖 -- 权限

依赖

/////Gson依赖
implementation 'com.google.code.gson:gson:2.8.2'


//Imageloader依赖
implementation 'com.nostra13.universalimageloader:universal-image-loader:1.9.5'



//自己写的Xlistview依赖
implementation project(':xlistviewlibrary')


//TabLayout依赖
implementation 'com.android.support:design:28+'

//PullToRefreshListView依赖
implementation 'com.github.userswlwork:pull-to-refresh:1.0.0'


//频道管理依赖
implementation 'com.github.andyoom:draggrid:v1.0.1'

//轮播图banner依赖
 implementation 'com.youth.banner:banner:1.4.9'

///
maven {url "https://jitpack.io"}

权限


		判断是否有网
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
		网络权限
    <uses-permission android:name="android.permission.INTERNET"/>

			读写权限
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

快捷键

整理代码 alt+ctrl+L

补全代码 alt+ctrl+V

提成全局变量 alt+ctrl+F

代码提示 alt+ctrl+空格

去除没用的包 alt+ctrl+O

//轮播图

radioGroup和viewPager

//轮播图
	private void lbuData() {
		// TODO Auto-generated method stub
		int arr[] = {R.drawable.banner01,R.drawable.banner02,R.drawable.banner03,R.drawable.ic_launcher};
		final ArrayList<ImageView> list = new ArrayList<ImageView>();
		//添加图片和小圆点
		for (int i = 0; i < arr.length; i++) {
			ImageView imageView = new ImageView(LoginActivity.this);
			imageView.setImageResource(arr[i]);
			list.add(imageView);
			
			RadioButton button = new RadioButton(LoginActivity.this);
			radioGroup.addView(button);
		}
		//第一个默认选中
		radioGroup.check(radioGroup.getChildAt(0).getId());
		//适配器
		pager.setAdapter(new PagerAdapter() {
			
			@Override
			public boolean isViewFromObject(View arg0, Object arg1) {
				// TODO Auto-generated method stub
				return arg0 == arg1;
			}
			
			@Override
			public int getCount() {
				// TODO Auto-generated method stub
				return Integer.MAX_VALUE;
			}
			
			@Override
			public Object instantiateItem(ViewGroup container, int position) {
				// TODO Auto-generated method stub
				position = position%list.size();
				ImageView imageView = list.get(position);
				container.addView(imageView);
				return imageView;
			}
			
			@Override
			public void destroyItem(ViewGroup container, int position,
					Object object) {
				// TODO Auto-generated method stub
				container.removeView((View) object);
			}
		});
		//滑动选中
		pager.setOnPageChangeListener(new OnPageChangeListener() {
			
			@Override
			public void onPageSelected(int arg0) {
				// TODO Auto-generated method stub
				arg0 = arg0%list.size();
				radioGroup.check(radioGroup.getChildAt(arg0).getId());
			}
			
			@Override
			public void onPageScrolled(int arg0, float arg1, int arg2) {
				// TODO Auto-generated method stub
				
			}
			
			@Override
			public void onPageScrollStateChanged(int arg0) {
				// TODO Auto-generated method stub
				
			}
		});
		
		handler.sendEmptyMessageDelayed(1, 3000);
	}
	
	Handler handler = new Handler(){
		public void handleMessage(android.os.Message msg) {
			switch (msg.what) {
			case 1:
				int currentItem = pager.getCurrentItem();
				currentItem+=1;
				pager.setCurrentItem(currentItem);
				handler.sendEmptyMessageDelayed(1, 3000);
				break;

			default:
				break;
			}
		};
	};

猜你喜欢