0.效果
效果图依次为启动界面，第一次显示用户协议对话框，动态获取权限。
系列文章目录导航
目录
1.实现分析
启动基本上没有什么难点，但在真实项目逻辑还是比较多；就是布局，然后显示用户协议对话框，动态处理权限，判断是否显示引导界面，是否显示广告界面等。
2.界面布局
<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="/apk/res/android"xmlns:tools="/tools"android:layout_width="match_parent"android:layout_height="match_parent"tools:context=".component.splash.activity.SplashActivity"><!--banner--><ImageViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_centerHorizontal="true"android:layout_marginTop="120dp"android:src="@drawable/splash_banner" /><!--logo--><ImageViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_above="@+id/copyright"android:layout_centerHorizontal="true"android:layout_marginBottom="20dp"android:src="@drawable/splash_logo" /><!--版权--><TextViewandroid:id="@+id/copyright"android:textColor="@color/black80"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentBottom="true"android:layout_centerHorizontal="true"android:layout_marginBottom="30dp"android:text="@string/copyright" /></RelativeLayout>
3.是否显示用户协议对话框
if (DefaultPreferenceUtil.getInstance(getHostActivity()).isAcceptTermsServiceAgreement()) {//已经同意了用户协议checkPermission();} else {showTermsServiceAgreementDialog();}
4.自定义协议对话框
继承自DialogFragment自定义对话框。
/*** 服务条款和隐私协议对话框*/public class TermServiceDialogFragment extends BaseViewModelDialogFragment<FragmentDialogTermServiceBinding> {private static final String TAG = "TermServiceDialogFragment";private View.OnClickListener onAgreementClickListener;public static TermServiceDialogFragment newInstance() {Bundle args = new Bundle();TermServiceDialogFragment fragment = new TermServiceDialogFragment();fragment.setArguments(args);return fragment;}/*** 显示对话框** @param fragmentManager* @param onAgreementClickListener 同意按钮点击回调*/public static void show(FragmentManager fragmentManager, View.OnClickListener onAgreementClickListener) {//创建fragmentTermServiceDialogFragment fragment = newInstance();fragment.onAgreementClickListener = onAgreementClickListener;//显示//TAG只是用来查找Fragment的//我们这里不需要查找//所以值可以随便写fragment.show(fragmentManager, "TermServiceDialogFragment");}@Overrideprotected void initViews() {super.initViews();//点击弹窗外边不能关闭setCancelable(false);SuperTextUtil.setLinkColor(binding.content, getActivity().getColor(R.color.link));}@Overrideprotected void initDatum() {super.initDatum();Spanned content = Html.fromHtml(getString(R.string.term_service_privacy_content));//lambda写法，监听器里面只有一个方法才能这样写SpannableStringBuilder result = SuperTextUtil.setHtmlLinkClick(content, data -> Log.d(TAG, "onLinkClick: " + data));binding.content.setText(result);}@Overrideprotected void initListeners() {super.initListeners();binding.primary.setOnClickListener(view -> {dismiss();onAgreementClickListener.onClick(view);});binding.disagree.setOnClickListener(view -> {dismiss();SuperProcessUtil.killApp();});}}
5.动态处理权限
现在做Android必须要动态处理权限，这里使用第三方框架，推荐再用到的时候才动态请求权限，写法和现在一样。
5.1添加动态权限框架
动态处理权限可以直接使用系统API，添加第三方框架目的是使用更加方便。
//动态处理权限///permissions-dispatcher/PermissionsDispatcherimplementation "com.github.permissions-dispatcher:permissionsdispatcher:4.8.0"annotationProcessor "com.github.permissions-dispatcher:permissionsdispatcher-processor:4.8.0"
5.2实现
private void checkPermission() {//让动态框架检查是否授权了//如果不使用框架就使用系统提供的API检查//它内部也是使用系统API检查//只是使用框架就更简单了SplashActivityPermissionsDispatcher.onPermissionGrantedWithPermissionCheck(this);}/*** 权限授权了就会调用该方法* 请求相机权限目的是扫描二维码，拍照*/@NeedsPermission({Manifest.permission.CAMERA,Manifest.permission.READ_EXTERNAL_STORAGE,Manifest.permission.WRITE_EXTERNAL_STORAGE,Manifest.permission.ACCESS_COARSE_LOCATION,Manifest.permission.ACCESS_FINE_LOCATION})void onPermissionGranted() {//如果有权限就进入下一步prepareNext();}/*** 显示权限授权对话框* 目的是提示用户*/@OnShowRationale({Manifest.permission.CAMERA,Manifest.permission.READ_EXTERNAL_STORAGE,Manifest.permission.WRITE_EXTERNAL_STORAGE,Manifest.permission.ACCESS_COARSE_LOCATION,Manifest.permission.ACCESS_FINE_LOCATION})void showRequestPermission(PermissionRequest request) {new AlertDialog.Builder(getHostActivity()).setMessage(R.string.permission_hint).setPositiveButton(R.string.allow, (dialog, which) -> request.proceed()).setNegativeButton(R.string.deny, (dialog, which) -> request.cancel()).show();}/*** 拒绝了权限调用*/@OnPermissionDenied({Manifest.permission.CAMERA,Manifest.permission.READ_EXTERNAL_STORAGE,Manifest.permission.WRITE_EXTERNAL_STORAGE,Manifest.permission.ACCESS_COARSE_LOCATION,Manifest.permission.ACCESS_FINE_LOCATION})void showDenied() {//退出应用finish();}/*** 再次获取权限的提示*/@OnNeverAskAgain({Manifest.permission.CAMERA,Manifest.permission.READ_EXTERNAL_STORAGE,Manifest.permission.WRITE_EXTERNAL_STORAGE,Manifest.permission.ACCESS_COARSE_LOCATION,Manifest.permission.ACCESS_FINE_LOCATION})void showNeverAsk() {//继续请求权限checkPermission();}/*** 授权后回调** @param requestCode* @param permissions* @param grantResults*/@Overridepublic void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {super.onRequestPermissionsResult(requestCode, permissions, grantResults);//将授权结果传递到框架SplashActivityPermissionsDispatcher.onRequestPermissionsResult(this, requestCode, grantResults);}
6.界面跳转
private void postNext() {binding.copyright.postDelayed(new Runnable() {@Overridepublic void run() {next();}}, Config.SPLASH_DEFAULT_DELAY_TIME);}private void next() {//获取意图的目的是，因为启动该界面的时候，可能携带一些数据//需要在主界面处理Intent intent = new Intent();Intent oldIntent = getIntent();IntentUtil.cloneIntent(oldIntent, intent);//if (sp.isLogin()) {//intent.setClass(getHostActivity(), AdActivity.class);//} else {intent.setClass(getHostActivity(), MainActivity.class);//}startActivity(intent);//关闭当前界面finish();//禁用启动动画overridePendingTransition(0, 0);}
7.总结
到这里启动界面相关逻辑就实现完成了，总体来说还是比较简单的。
