Android iOS 挖挖挖: 3月 2016

2016年3月17日星期四

Android RecognizerIntent TextToSpeech 跟Android對話

先說關鍵字(ok)，Android說出對應的關鍵字(google)

1./res/layout/activity_main.xml

2.MainActivity.java

package com.terryyamg.voicecontroltest;

import android.app.Activity;
import android.content.Intent;
import android.os.Build;
import android.os.Bundle;
import android.speech.RecognizerIntent;
import android.speech.tts.TextToSpeech;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.Toast;

import java.util.ArrayList;
import java.util.Locale;

public class MainActivity extends Activity {

    public static final int VOICE_RECOGNITION_REQUEST_CODE = 9527; //對應用數字

    private ListView lvSpeak;
    private TextToSpeech toSpeech;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Button btMessage = (Button) findViewById(R.id.btMessage);
        lvSpeak = (ListView) findViewById(R.id.lvSpeak);
        showMic(); //顯示麥克風收音

        //TextToSpeech 初始化
        toSpeech=new TextToSpeech(getApplicationContext(), new TextToSpeech.OnInitListener() {
            @Override
            public void onInit(int status) {
                if(status != TextToSpeech.ERROR) {
                    toSpeech.setLanguage(Locale.US);
                }
            }
        });

        //再說一次
        btMessage.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                showMic();
            }
        });

    }

    //顯示麥克風收音
    private void showMic(){
        Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
        intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
                RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
        intent.putExtra(RecognizerIntent.EXTRA_PROMPT,
                "Say OK!");
        startActivityForResult(intent, VOICE_RECOGNITION_REQUEST_CODE);
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        if (requestCode == VOICE_RECOGNITION_REQUEST_CODE && resultCode == RESULT_OK) {

            ArrayList matches = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
            lvSpeak.setAdapter(new ArrayAdapter(this, android.R.layout.simple_list_item_1, matches)); //列出辨識出的句子

            if (matches.contains("OK")) { //比對句子
                //Android 說 google
                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
                    String utteranceId=this.hashCode() + "";
                    toSpeech.speak("google", TextToSpeech.QUEUE_FLUSH, null, utteranceId);
                } else {
                    toSpeech.speak("google", TextToSpeech.QUEUE_FLUSH, null);
                }

            }else{
                Toast.makeText(this,"查無此句，請重試",Toast.LENGTH_SHORT).show();
            }
        }
    }

}

檔案下載:
https://github.com/terryyamg/VoiceControlTest
參考連結:
http://stackoverflow.com/questions/11798337/how-to-voice-commands-into-an-android-application
http://www.tutorialspoint.com/android/android_text_to_speech.htm
http://stackoverflow.com/questions/27968146/texttospeech-with-api-21

2016年3月15日星期二

Android Google Analytics V4 快速使用

使用Google Analytics來觀看app使用情形

1.先前往https://www.google.com/analytics/web/#home/
登入Google帳號，申請一個專案，就會得到一組序號
長這樣: UA-75136xxx-1

2.這裡IDE用Android studio，在build.gradle(Module:app)加入
compile 'com.google.android.gms:play-services-analytics:8.4.0'

3.建立一個app，在res資料夾下建立一個xml資料夾
建立app_tracker.xml檔案，位置/res/xml/app_tracker.xml


    
    300

    
    true

    
    UA-75136xxx-1

    100.0

    true

3.建立AnalyticsTrackers.java

package com.terryyamg.analyticstest;

import android.content.Context;

import com.google.android.gms.analytics.GoogleAnalytics;
import com.google.android.gms.analytics.Tracker;

import java.util.HashMap;
import java.util.Map;

/**
 * A collection of Google Analytics trackers. Fetch the tracker you need using
 * {@code AnalyticsTrackers.getInstance().get(...)}
 * <p/>
 * This code was generated by Android Studio but can be safely modified by
 * hand at this point.
 * <p/>
 * TODO: Call {@link #initialize(Context)} from an entry point in your app
 * before using this!
 */
public final class AnalyticsTrackers {

    public enum Target {
        APP,
        // Add more trackers here if you need, and update the code in #get(Target) below
    }

    private static AnalyticsTrackers sInstance;

    public static synchronized void initialize(Context context) {
        if (sInstance != null) {
            throw new IllegalStateException("Extra call to initialize analytics trackers");
        }

        sInstance = new AnalyticsTrackers(context);
    }

    public static synchronized AnalyticsTrackers getInstance() {
        if (sInstance == null) {
            throw new IllegalStateException("Call initialize() before getInstance()");
        }

        return sInstance;
    }

    private final Map<Target, Tracker> mTrackers = new HashMap<Target, Tracker>();
    private final Context mContext;

    /**
     * Don't instantiate directly - use {@link #getInstance()} instead.
     */
    private AnalyticsTrackers(Context context) {
        mContext = context.getApplicationContext();
    }

    public synchronized Tracker get(Target target) {
        if (!mTrackers.containsKey(target)) {
            Tracker tracker;
            switch (target) {
                case APP:
                    tracker = GoogleAnalytics.getInstance(mContext).newTracker(R.xml.app_tracker);
                    break;
                default:
                    throw new IllegalArgumentException("Unhandled analytics target " + target);
            }
            mTrackers.put(target, tracker);
        }

        return mTrackers.get(target);
    }
}

4.建立MyApplication.java

package com.terryyamg.analyticstest;

import android.app.Application;

import com.google.android.gms.analytics.GoogleAnalytics;
import com.google.android.gms.analytics.HitBuilders;
import com.google.android.gms.analytics.StandardExceptionParser;
import com.google.android.gms.analytics.Tracker;

public class MyApplication extends Application {
    public static final String TAG = MyApplication.class
            .getSimpleName();

    private static MyApplication mInstance;

    @Override
    public void onCreate() {
        super.onCreate();
        mInstance = this;

        AnalyticsTrackers.initialize(this);
        AnalyticsTrackers.getInstance().get(AnalyticsTrackers.Target.APP);
    }

    public static synchronized MyApplication getInstance() {
        return mInstance;
    }

    public synchronized Tracker getGoogleAnalyticsTracker() {
        AnalyticsTrackers analyticsTrackers = AnalyticsTrackers.getInstance();
        return analyticsTrackers.get(AnalyticsTrackers.Target.APP);
    }

    /***
     * Tracking screen view
     *
     * @param screenName screen name to be displayed on GA dashboard
     */
    public void trackScreenView(String screenName) {
        Tracker t = getGoogleAnalyticsTracker();

        // Set screen name.
        t.setScreenName(screenName);

        // Send a screen view.
        t.send(new HitBuilders.ScreenViewBuilder().build());

        GoogleAnalytics.getInstance(this).dispatchLocalHits();
    }

    /***
     * Tracking exception
     *
     * @param e exception to be tracked
     */
    public void trackException(Exception e) {
        if (e != null) {
            Tracker t = getGoogleAnalyticsTracker();

            t.send(new HitBuilders.ExceptionBuilder()
                            .setDescription(
                                    new StandardExceptionParser(this, null)
                                            .getDescription(Thread.currentThread().getName(), e))
                            .setFatal(false)
                            .build()
            );
        }
    }

    /***
     * Tracking event
     *
     * @param category event category
     * @param action   action of the event
     * @param label    label
     */
    public void trackEvent(String category, String action, String label) {
        Tracker t = getGoogleAnalyticsTracker();

        // Build and send an Event.
        t.send(new HitBuilders.EventBuilder().setCategory(category).setAction(action).setLabel(label).build());
    }

}

5.修改AndroidManifest.xml 加入網路權限
android.permission.INTERNET
android.permission.ACCESS_NETWORK_STATE
在application加入android:name=".MyApplication"

6.基本上到這邊就完成了，可以在https://analytics.google.com/analytics/web/看到

7.加入異常或當機狀態，在/res/layout/activity_main.xml加個Button

8.MainActivity.java

package com.terryyamg.analyticstest;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {

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

        Button btCrash = (Button) findViewById(R.id.btCrash);
        assert btCrash != null;
        btCrash.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                try{
                    String name = null;
                    if (name.equals("test")){

                    }
                }catch (Exception e){
                    MyApplication.getInstance().trackException(e); //紀錄在Google Analytics裡
                    Log.i("NullPointerException",e+"");
                }
                //註解掉try catch會直接crash，也會紀錄在Google Analytics裡面
            }
        });
    }
}

當機與例外狀況要等約一天才會出現

其餘還有其他功用，可以參考http://www.androidhive.info/2015/08/android-integrating-google-analytics-v4/

檔案下載:
https://github.com/terryyamg/AnalyticsTest
參考連結:
http://www.androidhive.info/2015/08/android-integrating-google-analytics-v4/

2016年3月7日星期一

Android RecyclerView

替代ListView方案 RecyclerView

1.在build.gradle(Module:app)添加compile 'com.android.support:recyclerview-v7:+'

apply plugin: 'com.android.application'

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.1"
    defaultConfig {
        applicationId "com.terryyamg.recyclerviewtest"
        minSdkVersion 17
        targetSdkVersion 21
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    productFlavors {
    }
}

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.2.0'
    compile 'com.android.support:recyclerview-v7:+'
}

2./res/layout/activity_main.xml

3.新增項目的layout /res/layout/item.xml
點擊效果
android:clickable="true"
android:background="?android:attr/selectableItemBackground"

4.新增分隔線class檔案 DividerItemDecoration.java

package com.terryyamg.recyclerviewtest;

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.View;

public class DividerItemDecoration extends RecyclerView.ItemDecoration {

    private static final int[] ATTRS = new int[]{
            android.R.attr.listDivider
    };

    public static final int HORIZONTAL_LIST = LinearLayoutManager.HORIZONTAL;

    public static final int VERTICAL_LIST = LinearLayoutManager.VERTICAL;

    private Drawable mDivider;

    private int mOrientation;

    public DividerItemDecoration(Context context, int orientation) {
        final TypedArray a = context.obtainStyledAttributes(ATTRS);
        mDivider = a.getDrawable(0);
        a.recycle();
        setOrientation(orientation);
    }

    public void setOrientation(int orientation) {
        if (orientation != HORIZONTAL_LIST && orientation != VERTICAL_LIST) {
            throw new IllegalArgumentException("invalid orientation");
        }
        mOrientation = orientation;
    }

    @Override
    public void onDrawOver(Canvas c, RecyclerView parent, RecyclerView.State state) {
        if (mOrientation == VERTICAL_LIST) {
            drawVertical(c, parent);
        } else {
            drawHorizontal(c, parent);
        }
    }

    public void drawVertical(Canvas c, RecyclerView parent) {
        final int left = parent.getPaddingLeft();
        final int right = parent.getWidth() - parent.getPaddingRight();

        final int childCount = parent.getChildCount();
        for (int i = 0; i < childCount; i++) {
            final View child = parent.getChildAt(i);
            final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child
                    .getLayoutParams();
            final int top = child.getBottom() + params.bottomMargin;
            final int bottom = top + mDivider.getIntrinsicHeight();
            mDivider.setBounds(left, top, right, bottom);
            mDivider.draw(c);
        }
    }

    public void drawHorizontal(Canvas c, RecyclerView parent) {
        final int top = parent.getPaddingTop();
        final int bottom = parent.getHeight() - parent.getPaddingBottom();

        final int childCount = parent.getChildCount();
        for (int i = 0; i < childCount; i++) {
            final View child = parent.getChildAt(i);
            final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child
                    .getLayoutParams();
            final int left = child.getRight() + params.rightMargin;
            final int right = left + mDivider.getIntrinsicHeight();
            mDivider.setBounds(left, top, right, bottom);
            mDivider.draw(c);
        }
    }

    @Override
    public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
        if (mOrientation == VERTICAL_LIST) {
            outRect.set(0, 0, 0, mDivider.getIntrinsicHeight());
        } else {
            outRect.set(0, 0, mDivider.getIntrinsicWidth(), 0);
        }
    }
}

5.新增點擊class檔案 RecyclerTouchListener.java

package com.terryyamg.recyclerviewtest;

import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;

public class RecyclerTouchListener implements RecyclerView.OnItemTouchListener {

    private GestureDetector gestureDetector;
    private ClickListener clickListener;

    public interface ClickListener {
        void onClick(View view, int position);

        void onLongClick(View view, int position);
    }

    public RecyclerTouchListener(Context context, final RecyclerView recyclerView, final ClickListener clickListener) {
        this.clickListener = clickListener;
        gestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
            @Override
            public boolean onSingleTapUp(MotionEvent e) {
                return true;
            }

            @Override
            public void onLongPress(MotionEvent e) {
                View child = recyclerView.findChildViewUnder(e.getX(), e.getY());
                if (child != null && clickListener != null) {
                    clickListener.onLongClick(child, recyclerView.getChildAdapterPosition(child));
                }
            }
        });
    }

    @Override
    public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {

        View child = rv.findChildViewUnder(e.getX(), e.getY());
        if (child != null && clickListener != null && gestureDetector.onTouchEvent(e)) {
            clickListener.onClick(child, rv.getChildAdapterPosition(child));
        }
        return false;
    }

    @Override
    public void onTouchEvent(RecyclerView rv, MotionEvent e) {
    }

    @Override
    public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {

    }
}

6.主檔 MainActivity.java

package com.terryyamg.recyclerviewtest;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.DefaultItemAnimator;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    private String[] ss = {"no.01", "no.02", "no.03","no.04", "no.05", "no.06","no.07", "no.08", "no.09","no.10", "no.11", "no.12"};

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

        RecyclerView rv = (RecyclerView) findViewById(R.id.rv);
        MyAdapter adapter = new MyAdapter(ss);
        LinearLayoutManager lm = new LinearLayoutManager(this);
        rv.setLayoutManager(lm);
        rv.setHasFixedSize(true); //當RecyclerView大小沒改變時最佳化
        rv.setItemAnimator(new DefaultItemAnimator()); //預設動畫效果
        rv.addItemDecoration(new DividerItemDecoration(this, LinearLayoutManager.VERTICAL)); //分隔線
        rv.setAdapter(adapter);
        //監聽事件
        rv.addOnItemTouchListener(new RecyclerTouchListener(getApplicationContext(), rv, new RecyclerTouchListener.ClickListener() {
            @Override
            public void onClick(View view, int position) {
                Toast.makeText(MainActivity.this, ss[position],Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onLongClick(View view, int position) {

            }
        }));
    }

    public class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyViewHolder> {

        private String[] ss;

        public class MyViewHolder extends RecyclerView.ViewHolder {
            public TextView tv;

            public MyViewHolder(View view) {
                super(view);
                tv = (TextView) view.findViewById(R.id.tv);
            }
        }

        public MyAdapter(String[] ss) {
            this.ss = ss;
        }

        @Override
        public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
            //設定item layout
            View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.item, parent, false);

            return new MyViewHolder(itemView);
        }

        @Override
        public void onBindViewHolder(MyViewHolder holder, int position) {
            //放入資料
            holder.tv.setText(ss[position]);
        }

        @Override
        public int getItemCount() {
            //取得長度
            return ss.length;
        }
    }

}

檔案下載:
https://github.com/terryyamg/RecyclerViewTest
參考連結:
http://www.androidhive.info/2016/01/android-working-with-recycler-view/
https://developer.android.com/reference/android/support/v7/widget/RecyclerView.html#getChildPosition%28android.view.View%29

2016年3月2日星期三

Android Splash Screen 新開啟畫面

前篇開啟app啟動畫面
http://terryyamg.blogspot.tw/2014/06/android-splashscreen.html
另一種方法

1.在 res/drawable/新增launch_screen.xml 上方加入android:opacity="opaque" 中間放入logo圖片並置中

2.在 res/values/styles.xml 新增一個AppTheme.Launcher

<resources>

    <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
    </style>

    <style name="AppTheme.Launcher">
        <item name="android:windowBackground">@drawable/launch_screen</item>
    </style>

</resources>

3.在AndroidManifest.xml加入 android:theme="@style/AppTheme.Launcher"

4.最後MainActivity.java

package com.terryyamg.launchscreenstest;

import android.app.Activity;
import android.os.Bundle;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        setTheme(R.style.AppTheme); //加入此行
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
}

檔案下載:
https://github.com/terryyamg/LaunchScreensTest
參考來源:
https://plus.google.com/+AndroidDevelopers/posts/Z1Wwainpjhd

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2016年3月17日 星期四