公司做网站怎么做,当建设部门网站,企业内部管理软件,wordpress 文章分类链接说明#xff1a;这个简单的基于RecyclerView的框架作用在于自己可以将平时积累的一些有效demo整合起来#xff08;比如音视频编解码的、opengles的以及其他也去方向的、随着项目增多#xff0c;工程量的增加#xff0c;后期想高效的分析和查找并不容易#xff09;#xf…说明这个简单的基于RecyclerView的框架作用在于自己可以将平时积累的一些有效demo整合起来比如音视频编解码的、opengles的以及其他也去方向的、随着项目增多工程量的增加后期想高效的分析和查找并不容易不用搞太多的工程不像多个工程过于分散也占空间。 1 基于RecyclerView框架工程实现原理说明
该工程通过config.xml配置文件获取每一个网格中的基本信息并将其存储到itemlist中。应用启动后点击网格中的按键每个按键可以按需启动一个应用。适用于长期积累自己的知识体系。
接下来直接上干货粘过去可以直接用的那种~。平台是基于Android12的。
2 框架工程代码完整解读(android Q)
2.1 layout布局文件解读
res/layout 主界面 activity_main.xml内容如下
androidx.constraintlayout.widget.ConstraintLayout xmlns:androidhttp://schemas.android.com/apk/res/androidxmlns:apphttp://schemas.android.com/apk/res-autoxmlns:toolshttp://schemas.android.com/toolsandroid:idid/mainandroid:layout_widthmatch_parentandroid:layout_heightmatch_parenttools:context.MainActivitytools:ignoreExtraTextandroidx.recyclerview.widget.RecyclerViewandroid:idid/recyclerviewandroid:layout_widthmatch_parentandroid:layout_height500dpapp:layout_constraintLeft_toLeftOfparentapp:layout_constraintRight_toRightOfparentapp:layout_constraintTop_toTopOfparent /TextViewandroid:idid/textviewMainMenuandroid:layout_widthmatch_parentandroid:layout_height200dpandroid:textstring/titleandroid:backgroundcolor/whiteapp:layout_constraintLeft_toLeftOfparentapp:layout_constraintRight_toRightOfparentapp:layout_constraintTop_toBottomOfid/recyclerview /
/androidx.constraintlayout.widget.ConstraintLayout
RecycleView中需要使用的配置文件item参考实现如下
?xml version1.0 encodingutf-8?
androidx.constraintlayout.widget.ConstraintLayout xmlns:androidhttp://schemas.android.com/apk/res/androidxmlns:apphttp://schemas.android.com/apk/res-autoxmlns:toolshttp://schemas.android.com/toolsandroid:layout_widthmatch_parentandroid:layout_heightmatch_parentTextViewandroid:idid/textViewandroid:layout_widthwrap_contentandroid:layout_heightwrap_contentandroid:layout_marginStart4dpandroid:layout_marginTop18dpandroid:textstring/titleapp:layout_constraintStart_toStartOfparentapp:layout_constraintTop_toTopOfparent /Buttonandroid:idid/buttonandroid:layout_heightwrap_contentandroid:layout_widthwrap_contentandroid:textstring/h264_decode_demoapp:layout_constraintStart_toStartOfid/textViewapp:layout_constraintTop_toBottomOfid/textViewtools:ignoreMissingConstraints /
/androidx.constraintlayout.widget.ConstraintLayout2.2 配置文件体系构建
使用res/xml 配置文件 config.xml内容如下
?xml version1.0 encodingutf-8?
itemsitemdescriptionH264解码一个download目录下的out.h264码流/descriptionbuttonNameH264解码/buttonNameactivityNamecom.wds.videoexample.Activity1/activityName/itemitemdescription通过mediaprojection获取投屏数据使用H264编码一个sdcard/路径下的codec.h264码流/descriptionbuttonNameH264编码/buttonNameactivityNamecom.example.app.Activity2/activityName/itemitemdescription通过camerax获取投屏数据使用H264编码一个sdcard/路径下的codec.h264码流/descriptionbuttonNameButton03/buttonNameactivityNamecom.example.app.Activity3/activityName/item。。。
items
关于元素的个数和tag大家可以自己按照自己的需求自定义。接下来有了配置文件还要有配套的解析器这里命名为ParseConfig代码实现如下
public class ParserConfig {private final static String TAG ParserConfig;private static ListItem itemList;public static ListItem getItemList() {return itemList;}private static String fullDescription ;SuppressLint(DefaultLocale)public static void initItemList(Context context) {itemList new ArrayList();XmlResourceParser parser context.getResources().getXml(R.xml.config);Log.d(TAG,initItemLis);String description null;String buttonName null;String activityName null;String tagName null;//String fullDescription ;int index 0;try {int eventType parser.getEventType();while (eventType ! XmlPullParser.END_DOCUMENT) {if (eventType XmlPullParser.START_TAG) {tagName parser.getName();if (item.equals(tagName)) {index;while (parser.next() ! XmlPullParser.END_TAG) {if (parser.getEventType() XmlPullParser.TEXT) {description parser.getText();fullDescription \ndemoString.format(%03d,index):description\n;}}while (parser.next() ! XmlPullParser.END_TAG) {if (parser.getEventType() XmlPullParser.TEXT) {buttonName parser.getText();}}while (parser.next() ! XmlPullParser.END_TAG) {if (parser.getEventType() XmlPullParser.TEXT) {activityName parser.getText();}}if (buttonName ! null activityName ! null) {itemList.add(new Item(description,buttonName, activityName));}}}eventType parser.next();}} catch (XmlPullParserException | IOException e) {e.printStackTrace();}}public static String getFullDescription(){return fullDescription;}
}
这里涉及的itemlist中的元素item定义如下
public class Item {public String buttonName; //点击按键内容private String activityName;private String description;public Item(String description, String buttonName, String activityName) {this.buttonName buttonName;this.activityName activityName;this.description description;}public String getDescription() {return description;}public void setDescription(String description) {this.description description;}public String getButtonName() {return buttonName;}public void setButtonName(String buttonName) {this.buttonName buttonName;}public String getActivityName() {return activityName;}public void setActivityName(String activityName) {this.activityName activityName;}
}
2.3 权限的处理
关于权限使用了一个Permission 专门的类来做运行时权限的处理代码实现如下
public class Permission {public static final int REQUEST_MANAGE_EXTERNAL_STORAGE 1;//需要申请权限的数组private static final String[] permissions {Manifest.permission.WRITE_EXTERNAL_STORAGE,Manifest.permission.READ_EXTERNAL_STORAGE,Manifest.permission.CAMERA};//保存真正需要去申请的权限private static final ListString permissionList new ArrayList();public static int RequestCode 100;public static void requestManageExternalStoragePermission(Context context, Activity activity) {if (!Environment.isExternalStorageManager()) {showManageExternalStorageDialog(activity);}}private static void showManageExternalStorageDialog(Activity activity) {AlertDialog dialog new AlertDialog.Builder(activity).setTitle(权限请求).setMessage(请开启文件访问权限否则应用将无法正常使用。).setNegativeButton(取消, null).setPositiveButton(确定, (dialogInterface, i) - {Intent intent new Intent(Settings.ACTION_MANAGE_ALL_FILES_ACCESS_PERMISSION);activity.startActivityForResult(intent, REQUEST_MANAGE_EXTERNAL_STORAGE);}).create();dialog.show();}public static void checkPermissions(Activity activity) {for (String permission : permissions) {if (ContextCompat.checkSelfPermission(activity, permission) ! PackageManager.PERMISSION_GRANTED) {permissionList.add(permission);}}if (!permissionList.isEmpty()) {requestPermission(activity);}}public static void requestPermission(Activity activity) {ActivityCompat.requestPermissions(activity,permissionList.toArray(new String[0]),RequestCode);}
}
这样如果后面又更多的权限都可以使用该方法来处理处理方式为
Permission.checkPermissions(this);
Permission.requestManageExternalStoragePermission(getApplicationContext(), this);
2.4 基于RecyclerView的框架工程 | 主流程代码参考实现
这里给出框架工程的代码的实现。具体如下
public class MainActivity extends AppCompatActivity {private static final String TAG MainActivity;private RecyclerView mRecyclerView;MyAdapter mMyAdapter ;private ListItem itemList;private TextView mTextViewMainmenu;SuppressLint(DefaultLocale)Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);EdgeToEdge.enable(this);setContentView(R.layout.activity_main);ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main), (v, insets) - {Insets systemBars insets.getInsets(WindowInsetsCompat.Type.systemBars());v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);return insets;});mTextViewMainmenu findViewById(R.id.textviewMainMenu);mTextViewMainmenu.setMovementMethod(ScrollingMovementMethod.getInstance());mRecyclerView findViewById(R.id.recyclerview);ParserConfig.initItemList(this);mTextViewMainmenu.setText(ParserConfig.getFullDescription());itemList ParserConfig.getItemList();mMyAdapter new MyAdapter();mRecyclerView.setAdapter(mMyAdapter);GridLayoutManager layoutManager new GridLayoutManager(MainActivity.this,3);mRecyclerView.setLayoutManager(layoutManager);DividerItemDecoration mDivider newDividerItemDecoration(this, DividerItemDecoration.VERTICAL);mRecyclerView.addItemDecoration(mDivider);DividerItemDecoration mDivider2 newDividerItemDecoration(this, DividerItemDecoration.HORIZONTAL);mRecyclerView.addItemDecoration(mDivider2);}class MyAdapter extends RecyclerView.AdapterMyViewHoder {NonNullOverridepublic MyViewHoder onCreateViewHolder(NonNull ViewGroup parent, int viewType) {View view View.inflate(MainActivity.this, R.layout.item_list, null);return new MyViewHoder(view);}Overridepublic void onBindViewHolder(NonNull MyViewHoder holder, int position) {Item item itemList.get(position);SuppressLint(DefaultLocale) String title_text getString(R.string.wbs_demo) String.format(%03d, position1);holder.mTitleTv.setText(title_text);holder.mButton.setText(item.buttonName);holder.mButton.setTag(position);holder.mButton.setOnClickListener(new View.OnClickListener() {Overridepublic void onClick(View view) {int position (int)view.getTag();mTextViewMainmenu.setText(itemList.get(position).getDescription());Handler handler new Handler();handler.postDelayed(new Runnable() {Overridepublic void run() {if (position 0) {Intent intent new Intent(MainActivity.this, H264decoderActivity.class);startActivity(intent);} else if (position 1) {Intent intent new Intent(MainActivity.this, H264encoderMediaProjActivity.class);startActivity(intent);} else if (position 2) {Intent intent new Intent(MainActivity.this, H264encoderCameraXActivity.class);startActivity(intent);}}}, 3000); //Log.d(TAG,onclickview.getTag());}});}Overridepublic int getItemCount() {return itemList.size();}}static class MyViewHoder extends RecyclerView.ViewHolder {TextView mTitleTv;Button mButton;public MyViewHoder(NonNull View itemView) {super(itemView);mTitleTv itemView.findViewById(R.id.textView);mButton itemView.findViewById(R.id.button);}}
}
2.5 主框架 demo实现效果
实际运行效果展示如下
