十日冲刺（DAY8）

第八天
package com.example.myactivity;

import android.app.ProgressDialog;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;

import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.TextView;

import com.example.myactivity.comm.GlideSimpleLoader;
import com.example.myactivity.view.imagewatcher.ImageWatcherHelper;
import com.example.myactivity.ui.BaseActivity;
import com.example.myactivity.db.bean.Group;
import com.example.myactivity.db.bean.Note;
//import com.example.myactivity.comm.GlideSimpleLoader;
import com.example.myactivity.db.GroupDao;
import com.example.myactivity.util.CommonUtil;
import com.example.myactivity.util.ImageUtils;
import com.example.myactivity.util.StringUtils;
//import com.github.ielse.imagewatcher.ImageWatcherHelper;
import com.google.android.material.floatingactionbutton.FloatingActionButton;
import com.google.android.material.snackbar.Snackbar;

import java.util.ArrayList;
import java.util.List;

import androidx.appcompat.widget.Toolbar;
import io.reactivex.Observable;
import io.reactivex.ObservableEmitter;
import io.reactivex.ObservableOnSubscribe;
import io.reactivex.Observer;
import io.reactivex.android.schedulers.AndroidSchedulers;
import io.reactivex.disposables.Disposable;
import io.reactivex.schedulers.Schedulers;

public class NoteActivity extends BaseActivity {
private static final String TAG = "NoteActivity";

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private RichTextView tv_note_content;
//private ScrollView scroll_view;
private Note note;
private String myTitle;
private String myContent;
private String myGroupName;

private ProgressDialog loadingDialog;
private Disposable mDisposable;
private ImageWatcherHelper iwHelper;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_note);

    initView();

}

private void initView() {
    Toolbar toolbar = findViewById(R.id.toolbar_note);
    toolbar.setTitle("详情");
    setSupportActionBar(toolbar);
    if (getSupportActionBar() != null) {
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    }
    //toolbar.setNavigationIcon(R.drawable.ic_dialog_info);
    toolbar.setNavigationOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            finish();
        }
    });

    FloatingActionButton fab = findViewById(R.id.fab_note);
    fab.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                    .setAction("Action", null).show();
        }
    });

    iwHelper = ImageWatcherHelper.with(this, new GlideSimpleLoader());

    GroupDao groupDao = new GroupDao(this);

    loadingDialog = new ProgressDialog(this);
    loadingDialog.setMessage("数据加载中...");
    loadingDialog.setCanceledOnTouchOutside(false);
    loadingDialog.show();

    //标题
    TextView tv_note_title = findViewById(R.id.tv_note_title);//标题
    tv_note_title.setTextIsSelectable(true);
    tv_note_content = findViewById(R.id.tv_note_content);//内容
    //创建时间
    TextView tv_note_time = findViewById(R.id.tv_note_time);
    //选择分类
    TextView tv_note_group = findViewById(R.id.tv_note_group);

    try {
        Intent intent = getIntent();
        Bundle bundle = intent.getBundleExtra("data");
        note = (Note) bundle.getSerializable("note");

        if (note != null) {
            myTitle = note.getTitle();
            myContent = note.getContent();
            Group group = groupDao.queryGroupById(note.getGroupId());
            if (group != null) {
                myGroupName = group.getName();
                tv_note_group.setText(myGroupName);
            }

            tv_note_title.setText(myTitle);
            tv_note_content.post(new Runnable() {
                @Override
                public void run() {
                    dealWithContent();
                }
            });
            tv_note_time.setText(note.getCreateTime());
        }
    } catch (Exception e) {
        e.printStackTrace();
    }

}

private void dealWithContent(){
    //showEditData(myContent);
    tv_note_content.clearAllLayout();
    showDataSync(myContent);

    // 图片点击事件
    tv_note_content.setOnRtImageClickListener(new RichTextView.OnRtImageClickListener() {
        @Override
        public void onRtImageClick(View view, String imagePath) {
            try {
                ArrayList<String> imageList = StringUtils.getTextFromHtml(myContent, true);
                int currentPosition = imageList.indexOf(imagePath);
                showToast("点击图片："+currentPosition+"："+imagePath);

                List<Uri> dataList = new ArrayList<>();
                for (int i = 0; i < imageList.size(); i++) {
                    dataList.add(ImageUtils.getUriFromPath(imageList.get(i)));
                }
                iwHelper.show(dataList, currentPosition);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    });
}

/**
 * 异步方式显示数据
 */
private void showDataSync(final String html){

    Observable.create(new ObservableOnSubscribe<String>() {
        @Override
        public void subscribe(ObservableEmitter<String> emitter) {
            showEditData(emitter, html);
        }
    })
    //.onBackpressureBuffer()
    .subscribeOn(Schedulers.io())//生产事件在io
    .observeOn(AndroidSchedulers.mainThread())//消费事件在UI线程
    .subscribe(new Observer<String>() {
        @Override
        public void onComplete() {
            if (loadingDialog != null){
                loadingDialog.dismiss();
            }
        }

        @Override
        public void onError(Throwable e) {
            if (loadingDialog != null){
                loadingDialog.dismiss();
            }
            showToast("解析错误：图片不存在或已损坏");
            Log.e(TAG, "onError: " + e.getMessage());
        }

        @Override
        public void onSubscribe(Disposable d) {
            mDisposable = d;
        }

        @Override
        public void onNext(String text) {
            try {
                if (tv_note_content !=null) {
                    if (text.contains("<img") && text.contains("src=")) {
                        //imagePath可能是本地路径，也可能是网络地址
                        String imagePath = StringUtils.getImgSrc(text);
                        tv_note_content.addImageViewAtIndex(tv_note_content.getLastIndex(), imagePath);
                    } else {
                        tv_note_content.addTextViewAtIndex(tv_note_content.getLastIndex(), text);
                    }
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    });

}

/**
 * 显示数据
 */
private void showEditData(ObservableEmitter<String> emitter, String html) {
    try {
        List<String> textList = StringUtils.cutStringByImgTag(html);
        for (int i = 0; i < textList.size(); i++) {
            String text = textList.get(i);
            emitter.onNext(text);
        }
        emitter.onComplete();
    } catch (Exception e){
        e.printStackTrace();
        emitter.onError(e);
    }
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.menu_note, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()){
        case R.id.action_note_edit://编辑日记
            Intent intent = new Intent(NoteActivity.this, NewActivity.class);
            Bundle bundle = new Bundle();
            bundle.putSerializable("note", note);
            intent.putExtra("data", bundle);
            intent.putExtra("flag", 1);//编辑日记
            startActivity(intent);
            finish();
            break;
        case R.id.action_note_share://分享日记
            CommonUtil.shareTextAndImage(this, note.getTitle(), note.getContent(), null);//分享图文
            break;
    }
    return super.onOptionsItemSelected(item);
}

@Override
protected void onResume() {
    super.onResume();
}

@Override
protected void onStop() {
    super.onStop();
    if (mDisposable != null && !mDisposable.isDisposed()){
        mDisposable.dispose();
    }
}

@Override
public void onBackPressed() {
    if (!iwHelper.handleBackPressed()) {
        super.onBackPressed();
    }
    finish();
}

}