Rx SearchView

#11
- CheeseActivity.java with Rx search implementation

app/src/main/AndroidManifest.xml

@@ -47,6 +47,7 @@
         <activity android:name=".SettingsActivity"/>
         <activity android:name=".MapActivity"/>
         <activity android:name=".RxbusActivity"/>
+        <activity android:name=".CheeseActivity"/>
 
 
 

app/src/main/java/com/eusecom/attendance/CheeseActivity.java

@@ -0,0 +1,163 @@
+/*
+ * Copyright (c) 2016 Razeware LLC
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+package com.eusecom.attendance;
+
+import android.text.Editable;
+import android.text.TextWatcher;
+import android.view.View;
+
+import java.util.List;
+import java.util.concurrent.TimeUnit;
+
+import io.reactivex.Observable;
+import io.reactivex.ObservableEmitter;
+import io.reactivex.ObservableOnSubscribe;
+import io.reactivex.android.schedulers.AndroidSchedulers;
+import io.reactivex.disposables.Disposable;
+import io.reactivex.functions.Cancellable;
+import io.reactivex.functions.Consumer;
+import io.reactivex.functions.Function;
+import io.reactivex.functions.Predicate;
+import io.reactivex.schedulers.Schedulers;
+
+//by https://www.raywenderlich.com/141980/rxandroid-tutorial
+
+public class CheeseActivity extends CheeseBaseSearchActivity {
+
+  private Disposable mDisposable;
+
+  @Override
+  protected void onStart() {
+    super.onStart();
+
+    Observable<String> buttonClickStream = createButtonClickObservable();
+    Observable<String> textChangeStream = createTextChangeObservable();
+
+    Observable<String> searchTextObservable = Observable.merge(textChangeStream, buttonClickStream);
+
+    mDisposable = searchTextObservable // change this line
+        .observeOn(AndroidSchedulers.mainThread())
+        .doOnNext(new Consumer<String>() {
+          @Override
+          public void accept(String s) {
+            showProgressBar();
+          }
+        })
+        .observeOn(Schedulers.io())
+        .map(new Function<String, List<String>>() {
+          @Override
+          public List<String> apply(String query) {
+            return mCheeseSearchEngine.search(query);
+          }
+        })
+        .observeOn(AndroidSchedulers.mainThread())
+        .subscribe(new Consumer<List<String>>() {
+          @Override
+          public void accept(List<String> result) {
+            hideProgressBar();
+            showResult(result);
+          }
+        });
+  }
+
+  @Override
+  protected void onStop() {
+    super.onStop();
+    if (!mDisposable.isDisposed()) {
+      mDisposable.dispose();
+    }
+  }
+
+  // 1
+  private Observable<String> createButtonClickObservable() {
+
+    // 2
+    return Observable.create(new ObservableOnSubscribe<String>() {
+
+      // 3
+      @Override
+      public void subscribe(final ObservableEmitter<String> emitter) throws Exception {
+        // 4
+        mSearchButton.setOnClickListener(new View.OnClickListener() {
+          @Override
+          public void onClick(View view) {
+            // 5
+            emitter.onNext(mQueryEditText.getText().toString());
+          }
+        });
+
+        // 6
+        emitter.setCancellable(new Cancellable() {
+          @Override
+          public void cancel() throws Exception {
+            // 7
+            mSearchButton.setOnClickListener(null);
+          }
+        });
+      }
+    });
+  }
+
+  //1
+  private Observable<String> createTextChangeObservable() {
+    //2
+    Observable<String> textChangeObservable = Observable.create(new ObservableOnSubscribe<String>() {
+      @Override
+      public void subscribe(final ObservableEmitter<String> emitter) throws Exception {
+        //3
+        final TextWatcher watcher = new TextWatcher() {
+          @Override
+          public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
+
+          @Override
+          public void afterTextChanged(Editable s) {}
+
+          //4
+          @Override
+          public void onTextChanged(CharSequence s, int start, int before, int count) {
+            emitter.onNext(s.toString());
+          }
+        };
+
+        //5
+        mQueryEditText.addTextChangedListener(watcher);
+
+        //6
+        emitter.setCancellable(new Cancellable() {
+          @Override
+          public void cancel() throws Exception {
+            mQueryEditText.removeTextChangedListener(watcher);
+          }
+        });
+      }
+    });
+
+    return textChangeObservable
+        .filter(new Predicate<String>() {
+          @Override
+          public boolean test(String query) throws Exception {
+            return query.length() >= 2;
+          }
+        }).debounce(1000, TimeUnit.MILLISECONDS);  // add this line
+  }
+}

app/src/main/java/com/eusecom/attendance/CheeseAdapter.java

@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2016 Razeware LLC
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+package com.eusecom.attendance;
+
+import android.support.v7.widget.RecyclerView;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import java.util.List;
+
+public class CheeseAdapter extends RecyclerView.Adapter<CheeseAdapter.CheeseViewHolder> {
+
+  private List<String> mCheeses;
+
+  @Override
+  public CheeseViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
+    LayoutInflater layoutInflater = LayoutInflater.from(parent.getContext());
+    View view = layoutInflater.inflate(android.R.layout.simple_list_item_1, parent, false);
+    return new CheeseViewHolder(view);
+  }
+
+  @Override
+  public void onBindViewHolder(CheeseViewHolder holder, int position) {
+    holder.title.setText(mCheeses.get(position));
+  }
+
+  @Override
+  public int getItemCount() {
+    return mCheeses == null ? 0 : mCheeses.size();
+  }
+
+  public void setCheeses(List<String> cheeses) {
+    mCheeses = cheeses;
+    notifyDataSetChanged();
+  }
+
+  public static class CheeseViewHolder extends RecyclerView.ViewHolder {
+    public final TextView title;
+
+    public CheeseViewHolder(View itemView) {
+      super(itemView);
+      title = (TextView) itemView.findViewById(android.R.id.text1);
+    }
+  }
+}

app/src/main/java/com/eusecom/attendance/CheeseBaseSearchActivity.java

@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 2016 Razeware LLC
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+package com.eusecom.attendance;
+
+import android.os.Bundle;
+import android.support.annotation.Nullable;
+import android.support.v7.app.AppCompatActivity;
+import android.support.v7.widget.LinearLayoutManager;
+import android.support.v7.widget.RecyclerView;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.ProgressBar;
+import android.widget.Toast;
+
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+public abstract class CheeseBaseSearchActivity extends AppCompatActivity {
+
+  protected CheeseSearchEngine mCheeseSearchEngine;
+  protected EditText mQueryEditText;
+  protected Button mSearchButton;
+  private CheeseAdapter mAdapter;
+  private ProgressBar mProgressBar;
+
+  @Override
+  protected void onCreate(@Nullable Bundle savedInstanceState) {
+    super.onCreate(savedInstanceState);
+    setContentView(R.layout.activity_cheeses);
+
+    RecyclerView list = (RecyclerView) findViewById(R.id.list);
+    list.setLayoutManager(new LinearLayoutManager(this));
+    list.setAdapter(mAdapter = new CheeseAdapter());
+
+    mQueryEditText = (EditText) findViewById(R.id.query_edit_text);
+    mSearchButton = (Button) findViewById(R.id.search_button);
+    mProgressBar = (ProgressBar) findViewById(R.id.progress_bar);
+
+    List<String> cheeses = Arrays.asList(getResources().getStringArray(R.array.cheeses));
+    mCheeseSearchEngine = new CheeseSearchEngine(cheeses);
+  }
+
+  protected void showProgressBar() {
+    mProgressBar.setVisibility(View.VISIBLE);
+  }
+
+  protected void hideProgressBar() {
+    mProgressBar.setVisibility(View.GONE);
+  }
+
+  protected void showResult(List<String> result) {
+    if (result.isEmpty()) {
+      Toast.makeText(this, R.string.nothing_found, Toast.LENGTH_SHORT).show();
+      mAdapter.setCheeses(Collections.<String>emptyList());
+    } else {
+      mAdapter.setCheeses(result);
+    }
+  }
+
+}

app/src/main/java/com/eusecom/attendance/CheeseSearchEngine.java

@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2016 Razeware LLC
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+package com.eusecom.attendance;
+
+import java.util.LinkedList;
+import java.util.List;
+
+public class CheeseSearchEngine {
+
+  private final List<String> mCheeses;
+  private final int mCheesesCount;
+
+  public CheeseSearchEngine(List<String> cheeses) {
+    mCheeses = cheeses;
+    mCheesesCount = mCheeses.size();
+  }
+
+  public List<String> search(String query) {
+    query = query.toLowerCase();
+
+    try {
+      Thread.sleep(2000);
+    } catch (InterruptedException e) {
+      e.printStackTrace();
+    }
+
+    List<String> result = new LinkedList<>();
+
+    for (int i = 0; i < mCheesesCount; i++) {
+      if (mCheeses.get(i).toLowerCase().contains(query)) {
+        result.add(mCheeses.get(i));
+      }
+    }
+
+    return result;
+  }
+
+}

app/src/main/java/com/eusecom/attendance/MyAdapter.java

@@ -219,8 +219,8 @@ public void onClick(View v, int pos, boolean isLongClick) {
                             case 6:
 
                                 // View v at position pos is clicked.
-                                //Intent i6 = new Intent(mContext, CustomAuthActivity.class);
-                                //v.getContext().startActivity(i6);
+                                Intent i6 = new Intent(mContext, CheeseActivity.class);
+                                v.getContext().startActivity(i6);
 
                                 break;