SingleMeiziDetailsActivity.java

package com.hotbitmapgg.moequest.module.commonality;

import butterknife.Bind;
import com.bumptech.glide.Glide;
import com.bumptech.glide.load.engine.DiskCacheStrategy;
import com.bumptech.glide.load.resource.drawable.GlideDrawable;
import com.bumptech.glide.request.RequestListener;
import com.bumptech.glide.request.target.Target;
import com.hotbitmapgg.moequest.R;
import com.hotbitmapgg.moequest.base.RxBaseActivity;
import com.hotbitmapgg.moequest.utils.ConstantUtil;
import com.hotbitmapgg.moequest.utils.GlideDownloadImageUtil;
import com.hotbitmapgg.moequest.utils.ImmersiveUtil;
import com.tbruyelle.rxpermissions.RxPermissions;
import java.io.File;
import rx.Observable;
import rx.android.schedulers.AndroidSchedulers;
import rx.functions.Func1;
import rx.schedulers.Schedulers;
import uk.co.senab.photoview.PhotoViewAttacher;

import android.Manifest;
import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.support.design.widget.AppBarLayout;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AlertDialog;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.animation.DecelerateInterpolator;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

/**
 * Created by hcc on 16/8/13 12:14
 * 100332338@qq.com
 * <p/>
 * 单个妹子大图浏览界面
 */
public class SingleMeiziDetailsActivity extends RxBaseActivity {

  @Bind(R.id.meizi)
  ImageView mImageView;

  @Bind(R.id.tv_image_error)
  TextView mImageError;

  @Bind(R.id.app_bar_layout)
  AppBarLayout mAppBarLayout;

  @Bind(R.id.toolbar)
  Toolbar mToolBar;

  private static final String EXTRA_URL = "extra_url";

  private static final String EXTRA_TITLE = "extra_title";

  private String url;

  private String title;

  private boolean isHide = false;

  private PhotoViewAttacher mPhotoViewAttacher;


  @Override
  public int getLayoutId() {

    return R.layout.activity_meizi_pic;
  }


  @Override
  public void initViews(Bundle savedInstanceState) {

    Intent intent = getIntent();
    if (intent != null) {
      url = intent.getStringExtra(EXTRA_URL);
      title = intent.getStringExtra(EXTRA_TITLE);
    }

    Glide.with(this).load(url)
        .diskCacheStrategy(DiskCacheStrategy.ALL)
        .crossFade(0)
        .listener(new RequestListener<String, GlideDrawable>() {

          @Override
          public boolean onException(Exception e, String model,
                                     Target<GlideDrawable> target, boolean isFirstResource) {

            mImageError.setVisibility(View.VISIBLE);
            return false;
          }


          @Override
          public boolean onResourceReady(GlideDrawable resource, String model,
                                         Target<GlideDrawable> target, boolean isFromMemoryCache,
                                         boolean isFirstResource) {

            mImageView.setImageDrawable(resource);
            mPhotoViewAttacher = new PhotoViewAttacher(mImageView);
            mImageError.setVisibility(View.GONE);
            setUpPhotoAttacher();
            return false;
          }
        })
        .into(Target.SIZE_ORIGINAL, Target.SIZE_ORIGINAL);
  }


  @Override
  public void initToolBar() {

    mToolBar.setTitle(title);
    setSupportActionBar(mToolBar);
    ActionBar supportActionBar = getSupportActionBar();
    mToolBar.setNavigationOnClickListener(v -> onBackPressed());
    if (supportActionBar != null) {
      supportActionBar.setDisplayHomeAsUpEnabled(true);
    }

    mAppBarLayout.setAlpha(0.5f);
    mToolBar.setBackgroundResource(R.color.black_90);
    mAppBarLayout.setBackgroundResource(R.color.black_90);
  }


  @Override
  public boolean onCreateOptionsMenu(Menu menu) {

    getMenuInflater().inflate(R.menu.menu_meizi, menu);
    return true;
  }


  @Override
  public boolean onOptionsItemSelected(MenuItem item) {

    int itemId = item.getItemId();
    switch (itemId) {
      case R.id.action_fuli_share:
        // 分享
        Observable.just(R.string.app_name)
            .compose(this.<Integer>bindToLifecycle())
            .compose(RxPermissions.getInstance(SingleMeiziDetailsActivity.this)
                .ensure(Manifest.permission.WRITE_EXTERNAL_STORAGE))
            .observeOn(Schedulers.io())
            .filter(aBoolean -> aBoolean)
            .flatMap(new Func1<Boolean, Observable<Uri>>() {

              @Override
              public Observable<Uri> call(Boolean aBoolean) {

                return GlideDownloadImageUtil.
                    saveImageToLocal(SingleMeiziDetailsActivity.this, url);
              }
            })
            .observeOn(AndroidSchedulers.mainThread())
            .retry()
            .subscribe(this::share, throwable -> {

              Toast.makeText(SingleMeiziDetailsActivity.this, "分享失败,请重试",
                  Toast.LENGTH_SHORT).show();
            });
        return true;

      case R.id.action_fuli_save:
        //保存
        saveImageToGallery();
        return true;
    }

    return super.onOptionsItemSelected(item);
  }


  public static Intent LuanchActivity(Activity activity, String url, String title) {

    Intent intent = new Intent(activity, SingleMeiziDetailsActivity.class);
    intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    intent.putExtra(EXTRA_URL, url);
    intent.putExtra(EXTRA_TITLE, title);
    return intent;
  }


  private void setUpPhotoAttacher() {

    mPhotoViewAttacher.setOnViewTapListener((view, v, v1) -> {
      //隐藏ToolBar
      hideOrShowToolbar();
    });

    mPhotoViewAttacher.setOnLongClickListener(v -> {

      new AlertDialog.Builder(SingleMeiziDetailsActivity.this)
          .setMessage("是否保存到本地?")
          .setNegativeButton("取消", (dialog, which) -> dialog.cancel())
          .setPositiveButton("确定", (dialog, which) -> {

            saveImageToGallery();
            dialog.dismiss();
          })
          .show();

      return true;
    });
  }


  private void saveImageToGallery() {

    Observable.just(R.string.app_name)
        .compose(this.bindToLifecycle())
        .compose(RxPermissions.getInstance(SingleMeiziDetailsActivity.this)
            .ensure(Manifest.permission.WRITE_EXTERNAL_STORAGE))
        .observeOn(Schedulers.io())
        .filter(aBoolean -> aBoolean)
        .flatMap(new Func1<Boolean, Observable<Uri>>() {

          @Override
          public Observable<Uri> call(Boolean aBoolean) {

            return GlideDownloadImageUtil.saveImageToLocal(SingleMeiziDetailsActivity.this, url);
          }
        })
        .observeOn(AndroidSchedulers.mainThread())
        .subscribe(uri -> {

          File appDir = new File(Environment.getExternalStorageDirectory(),
              ConstantUtil.FILE_DIR);
          String msg = String.format("图片已保存至 %s 文件夹", appDir.getAbsolutePath());
          Toast.makeText(SingleMeiziDetailsActivity.this, msg, Toast.LENGTH_SHORT).show();
        }, throwable -> {

          Toast.makeText(SingleMeiziDetailsActivity.this, "保存失败,请重试", Toast.LENGTH_SHORT).show();
        });
  }


  /**
   * 分享图片
   */
  private void share(Uri uri) {

    Intent shareIntent = new Intent();
    shareIntent.setAction(Intent.ACTION_SEND);
    shareIntent.putExtra(Intent.EXTRA_STREAM, uri);
    shareIntent.setType("image/jpeg");
    startActivity(Intent.createChooser(shareIntent, title));
  }


  protected void hideOrShowToolbar() {

    if (isHide) {
      //显示
      ImmersiveUtil.exit(this);
      mAppBarLayout.animate()
          .translationY(0)
          .setInterpolator(new DecelerateInterpolator(2))
          .start();
      isHide = false;
    } else {
      //隐藏
      ImmersiveUtil.enter(this);
      mAppBarLayout.animate()
          .translationY(-mAppBarLayout.getHeight())
          .setInterpolator(new DecelerateInterpolator(2))
          .start();
      isHide = true;
    }
  }
}