基于Android Studio的个性化学习助手app.zip

package com.yc.studytooler; import android.Manifest; import android.app.Activity; import android.app.AlertDialog; import android.content.Context; import android.content.Intent; import android.content.SharedPreferences; import android.content.pm.PackageManager; import android.database.Cursor; import android.media.MediaPlayer; import android.media.MediaRecorder; import android.net.Uri; import android.os.Bundle; import android.os.Environment; import android.provider.OpenableColumns; import android.provider.Settings; import android.text.Editable; import android.text.TextWatcher; import android.util.Log; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.Button; import android.widget.EditText; import android.widget.FrameLayout; import android.widget.ImageView; import android.widget.Spinner; import android.widget.TextView; import android.widget.Toast; import android.widget.VideoView; import androidx.activity.result.ActivityResultLauncher; import androidx.activity.result.contract.ActivityResultContracts; import androidx.annotation.NonNull; import androidx.annotation.Nullable; import androidx.appcompat.app.AppCompatActivity; import androidx.appcompat.widget.Toolbar; import androidx.core.app.ActivityCompat; import androidx.core.content.ContextCompat; import androidx.lifecycle.ViewModelProvider; import androidx.recyclerview.widget.LinearLayoutManager; import androidx.recyclerview.widget.RecyclerView; import com.github.barteksc.pdfviewer.PDFView; import com.yc.studytooler.adapter.AddPostImageAdapter; import com.yc.studytooler.bean.MediaItem; import com.yc.studytooler.bean.SubjectContent; import com.yc.studytooler.utils.DateUtils; import com.yc.studytooler.viewmodel.SubjectContentViewModel; import com.yc.studytooler.viewmodel.SubjectContentViewModelFactory; import java.io.File; import java.io.IOException; import java.util.ArrayList; import java.util.Date; import java.util.List; /** * @ClassName AddPostActivity * @Descripttion TODO * @Author chaoyue * @Date 2024/4/22 14:53 * @VERSION 1.0 */ public class AddPostActivity extends AppCompatActivity { private static final int PERMISSION_CODE_STORAGE = 101; private static final int PERMISSION_CODE_AUDIO = 102; // 定义一个常量作为请求码 private static final int PERMISSION_CODE_PDF = 1000; private Toolbar tl_head; private Spinner spinnerMediaType; private FrameLayout frameMediaInput; private String user_name; private String semester_name; private String subject_name; private Date punch_date; private SubjectContentViewModelFactory subjectContentViewModelFactory; private SubjectContentViewModel subjectContentViewModel; //添加图片的适配器 private AddPostImageAdapter adapter; //存储内容类型 private String post_content_type; //存储纯文本数据 private String post_content_text; //存储非文本的留言 private String post_title; //存储音频的文件标题 private String post_audio_title; //存储pdf文件的文件标题 private String post_pdf_title; //存储图片的集合 private List<Uri> imageUris; //存储音频的路径 private String audioFilePath; //存储视频的路径 private List<Uri> videoFileUris; //存储PDF文件 private List<Uri> pdfFileUris; private ActivityResultLauncher<String> Launcher_images; private ActivityResultLauncher<String[]> Launcher_PDF; private ActivityResultLauncher<String> mLauncher_video; //音频 private TextView tvAudioPath; private Button btnRecord; private Button btnStop; private MediaRecorder mediaRecorder; //以下是视频视图所用到的组件 private VideoView videoPreview; private ImageView deleteVideoButton; //pdf private PDFView pdfView; private TextView pdfName; private ImageView deletePDFButton; @Override protected void onCreate(@Nullable Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_add_post); setupToolBar(); receiveDataFromSharedViewModel(); setupViewModel(); setupBasicView(); setupRegisterResultLauncher(); } private void setupRegisterResultLauncher() { //启动系统图库 Launcher_images = registerForActivityResult(new ActivityResultContracts.GetMultipleContents(), uris -> { imageUris.clear(); imageUris.addAll(uris); Log.d("AddPostActivity","进入到启动图库的启动器里:大小是"+imageUris.size()); for (Uri uri:uris){ adapter.addImage(uri); } }); //启动系统音频 //启动系统视频 mLauncher_video = registerForActivityResult(new ActivityResultContracts.GetContent(), uri -> { if (uri != null) { videoPreview.setVideoURI(uri); videoPreview.start(); videoPreview.setVisibility(View.VISIBLE); // 确保VideoView是可见的 deleteVideoButton.setVisibility(View.VISIBLE); // Show delete button when video is loaded videoFileUris.clear(); videoFileUris.add(uri); } }); //启动系统PDF文件 Launcher_PDF = registerForActivityResult( new ActivityResultContracts.OpenDocument(), result -> { if (result != null) { // 请求持久化权限 final int takeFlags = Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION; pdfFileUris.clear(); try{ Log.d("AddPostActivity","程序执行0"); // 请求持久化权限 getContentResolver().takePersistableUriPermission( result, takeFlags ); Log.d("AddPostActivity","程序执行1"); pdfFileUris.add(result); // 处理选择的 PDF 文件 pdfView.fromUri(result) .pages(0) // only display the first page .load(); Log.d("AddPostActivity","程序执行2"); // 获取并显示文件名 Cursor cursor = getContentResolver().query(result, null, null, null, null); String displayName = ""; if (cursor != null && cursor.moveToFirst()) { Log.d("AddPostActivity","程序执行3"); int index = cursor.getColumnIndex(OpenableColumns.DISPLAY_NAME); if (index != -1) { // 确保索引有效 Log.d("AddPostActivity","程序执行4"); displayName = cursor.getString(index); } cursor.close(); Log.d("AddPostActivity","程序执行5"); } pdfName.setText(displayName); Log.d("AddPostActivity",new File(result.getPath()).getName()); Log.d("AddPostActivity",displayName); pdfView.setVisibility(View.VISIBLE); deletePDFButton.setVisibility(View.VISIBLE); }catch (SecurityException e){ Log.e("AddPostActivity", "Failed to handle PDF: ", e);