Carpediem

땡겨서 새로고침 기능. Pull To Refresh.

이전에 사용하던 pull to refresh lib는 더이상 사용하지 않는 듯 하고 ...

안드로이드에서 제공하는 SwipeDrawer도 17부터 deprecated 돼버려서 ...

검색 해보니 커스텀 가능한 pull to refresh lib를 소개합니다.

"CustomSwipeRefreshLayout"

https://github.com/xyxyLiu/SwipeRefreshLayout

ListView, ViewPager, WebView 에서 사용 가능하고,

기존에 SwipeDrawer처럼 Progress Bar만 남기고 view가 사라지기도 하고,

기존의 pull to refresh처럼 현재 진행상태를 상단 view에서 표시하는 것도 가능합니다.

1. build.gradle에 아래 한 줄 추가 해 주시구요.

compile 'com.reginald.swiperefresh:library:1.1.0'

2. layout

(progress bar를 사용하지 않기 때문에 transparent로 지정했습니다.)

<com.reginald.swiperefresh.CustomSwipeRefreshLayout xmlns:swiperefresh="http://schemas.android.com/apk/res-auto"
    android:id="@+id/layout_refresh"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@android:color/transparent"
    swiperefresh:enable_top_progress_bar="true"
    swiperefresh:keep_refresh_head="true"
    swiperefresh:refresh_mode="pull_mode"
    swiperefresh:return_to_header_duration="500"
    swiperefresh:return_to_top_duration="500"
    swiperefresh:time_out_refresh_complete="500"
    swiperefresh:time_out_return_to_top="500"
    swiperefresh:top_progress_bar_color_1="@android:color/transparent"
    swiperefresh:top_progress_bar_color_2="@android:color/transparent"
    swiperefresh:top_progress_bar_color_3="@android:color/transparent"
    swiperefresh:top_progress_bar_color_4="@android:color/transparent">

    <RelativeLayout
        android:id="@+id/rl_main"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
    </RelativeLayout>

</com.reginald.swiperefresh.CustomSwipeRefreshLayout>

3. MainActivity

public class MainActivity extends Activity {
    private CustomSwipeRefreshLayout swipeRefreshLayout;

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

        // pull to refresh
        swipeRefreshLayout = (CustomSwipeRefreshLayout) findViewById(R.id.layout_refresh);
      
        swipeRefreshLayout.setCustomHeadview(new RefreshView(this));
        swipeRefreshLayout.setTriggerDistance(50);
        swipeRefreshLayout.setOnRefreshListener(new CustomSwipeRefreshLayout.OnRefreshListener() {
            @Override
            
 swipeRefreshLayout.setOnRefreshListener(new CustomSwipeRefreshLayout.OnRefreshListener() {
    @Override
    public void onRefresh() {
        // refresh 처리
    }
});   }

4. RefreshView

public class RefreshView extends LinearLayout implements CustomSwipeRefreshLayout.CustomSwipeRefreshHeadLayout {

    private static final boolean DEBUG = false;

    private static final SparseArray<String> STATE_MAP = new SparseArray<>();
    private ViewGroup mContainer;
    private ImageView mImageView;
    private ImageView mProgressBar;
    private int mState = -1;
    private Animation loadingAnim;
    private Context context;

    {
        STATE_MAP.put(0, "STATE_NORMAL");
        STATE_MAP.put(1, "STATE_READY");
        STATE_MAP.put(2, "STATE_REFRESHING");
        STATE_MAP.put(3, "STATE_COMPLETE");
    }

    public RefreshView(Context context) {
        super(context);
        this.context = context;
        setupLayout();
    }

    private void setupLayout() {
        ViewGroup.LayoutParams lp = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
        mContainer = (LinearLayout) LayoutInflater.from(getContext()).inflate(R.layout.view_main_refresh, null);
        addView(mContainer, lp);
        setGravity(Gravity.BOTTOM);
        mImageView = (ImageView) findViewById(com.reginald.swiperefresh.R.id.default_header_arrow);
        mProgressBar = (ImageView) findViewById(com.reginald.swiperefresh.R.id.default_header_progressbar);
        loadingAnim = AnimationUtils.loadAnimation(context, R.anim.anim_loading_rotate);
        setBackgroundColor(ContextCompat.getColor(context, android.R.color.transparent));
    }

    @Override
    public void onStateChange(CustomSwipeRefreshLayout.State state, CustomSwipeRefreshLayout.State lastState) {
        if (DEBUG)
            Log.d("csrh", "onStateChange state = " + state + ", lastState = " + lastState);
        int stateCode = state.getRefreshState();
        int lastStateCode = lastState.getRefreshState();
        float percent = state.getPercent();

        switch (stateCode) {
            case CustomSwipeRefreshLayout.State.STATE_NORMAL:
                if (percent > 0.5f) {
                    setImageRotation((percent - 0.5f) * 180 / 0.5f);
                } else {
                    setImageRotation(0);
                }

                if (stateCode != lastStateCode) {
                    //normal 상태처리
                }
                break;
            case CustomSwipeRefreshLayout.State.STATE_READY:
                if (stateCode != lastStateCode) {
                    //refresh 준비 
                    setImageRotation(180);
                }
                break;
            case CustomSwipeRefreshLayout.State.STATE_REFRESHING:
                if (stateCode != lastStateCode) {
                   // refresh 중의 view처리
                }
                break;

            case CustomSwipeRefreshLayout.State.STATE_COMPLETE:
                if (stateCode != lastStateCode) {
                    // refresh가 끝난 후 view 처리
                }
                break;
            default:
        }
        mState = stateCode;
    }


    private void setImageRotation(float rotation) {
        int currentapiVersion = android.os.Build.VERSION.SDK_INT;
        if (currentapiVersion >= android.os.Build.VERSION_CODES.HONEYCOMB) {
            mImageView.setRotation(rotation);
        } else {
            if (mImageView.getTag() == null){
                mImageView.setTag(0f);
            }
            mImageView.clearAnimation();
            Float lastDegree = (Float)mImageView.getTag();
            RotateAnimation rotate = new RotateAnimation(lastDegree, rotation,
                    Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);
            mImageView.setTag(rotation);
            rotate.setFillAfter(true);
            mImageView.startAnimation(rotate);
        }
    }
}

문자 수신 시 앱에서 문자를 인식 할 수 있습니다.

Receiver 하나 등록하면 바로 가능합니다.

1. AnddroidManifest에 permission 등록 및 receiver 등록

<!-- SMS receive permission -->
<uses-permission android:name="android.permission.RECEIVE_SMS" />
<!-- SMS read -->
<uses-permission android:name="android.permission.READ_SMS" />

<!-- SMS receiver -->
<receiver android:name=".receiver.SmsReceiver">
    <intent-filter>
        <action android:name="android.provider.Telephony.SMS_RECEIVED" />
    </intent-filter>
</receiver>

2. BroadCaseReceiver class 만들기

public class SmsReceiver extends BroadcastReceiver {
    public static final String TAG = "SmsReceiver";
    public static final String ACTION = "android.provider.Telephony.SMS_RECEIVED";

    @Override
    public void onReceive(Context context, Intent intent) {
        if (intent.getAction().equals(ACTION)) {
            Bundle bundle = intent.getExtras();
            if(null == bundle) {
                return;
            }

            if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
                SmsMessage[] smsMessages = Telephony.Sms.Intents.getMessagesFromIntent(intent);

                for(int i = 0 ; i < smsMessages.length ; i++) {
                    SmsMessage smsMessage = smsMessages[i];
                    setMessage(context, smsMessage);
                }
            } else {
                Object[] pdusObj = (Object[]) bundle.get("pdus");
                if(null == pdusObj) {
                    return;
                }
                SmsMessage[] smsMessages = new SmsMessage[pdusObj.length];
                for(int i = 0 ; i < pdusObj.length ; i++) {
                    smsMessages[i] = SmsMessage.createFromPdu((byte[]) pdusObj[i]);

                    setMessage(context, smsMessages[i]);
                }
            }
        }
    }

    private void setMessage(Context context, SmsMessage smsMessages) {
        Log.d(TAG, "DisplayMEssageBody :: " + smsMessages.getDisplayMessageBody());
        Log.d(TAG, "DisplayOrinatingAddress" +  smsMessages.getDisplayOriginatingAddress());
        Log.d(TAG, "EmailBody :: " +  smsMessages.getEmailBody());
        Log.d(TAG, "originatingAddress :: " +  smsMessages.getOriginatingAddress());
        Log.d(TAG, "MessageBody :: " +  smsMessages.getMessageBody());
        Log.d(TAG, "serviceCenterAddress :: " +  smsMessages.getServiceCenterAddress());
        Log.d(TAG, "time :: " +  smsMessages.getTimestampMillis());

        // Todo 요기에서 message를 가지고 작업하시면 됩니다.
    }
}

내부 저장소 용량 구하기.

1. 총 용량

public static String getLocalTotalMemory() {
    File path = Environment.getDataDirectory();
    StatFs stat = new StatFs(path.getPath());
    long blockSize = 0;
    long totalBlocks = 0;
    if(Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN_MR2) {
        blockSize = stat.getBlockSizeLong();
        totalBlocks = stat.getBlockCountLong();
    } else {
        blockSize = stat.getBlockSize();
        totalBlocks = stat.getBlockCount();
    }
    return  formatMemorySize(totalBlocks * blockSize);
}

2. 사용가능한 용량

public static String getCurrentRemainLocalMemory() {
    File path = Environment.getDataDirectory();
    StatFs stat = new StatFs(path.getPath());
    long blockSize = 0;
    long availableBlocks = 0;
    if(Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.JELLY_BEAN_MR2) {
        blockSize = stat.getBlockSizeLong();
        availableBlocks = stat.getAvailableBlocksLong();
    } else {
        blockSize = stat.getBlockSize();
        availableBlocks = stat.getAvailableBlocks();
    }

    return formatMemorySize(availableBlocks * blockSize);
}

3. 용량의 단위 정하기

public static String formatMemorySize(long memory) {
    String suffix = null;

    double size = 0;

    if(memory >= 1024){
        suffix = "_KB";
        size = (double) (memory / 1024);

        if(size >= 1024) {
            suffix = "_MB";
            size = (double) (size / 1024);

            if(size >= 1024) {
                suffix = "_GB";
                size = (double) (size / 1024);
            }
        }
    }

    size = Math.round(size * 10d)/10d;

    StringBuilder resultBuffer = new StringBuilder(Double.toString(size));

    if(suffix != null){
        resultBuffer.append(suffix);
    }

    return resultBuffer.toString();
}

ListView를 대용해 사용가능한 RecyclerView

CardView, 가로 스크롤, 세로 스크롤 등 활용도가 높음

1.xml

layout의 원하는 위치에 Recyclerview를 넣는다.

<android.support.v7.widget.RecyclerView
    android:id="@+id/list_view"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@android:color/transparent"></android.support.v7.widget.RecyclerView>

2. 초기화

public class TestActivity extends Activity {
     @Override
     protected void onCreate(Bundle savedInstanceState) {
        RecyclerView listView = (RecyclerView) view.findViewById(R.id.list_view);
        LinearLayoutManager layoutManager = new LinearLayoutManager(getActivity());
        layoutManager.setOrientation(LinearLayoutManager.HORIZONTAL);  // horizonta, vertical 옵션에 따라 가로/세로 list
        listView.setHasFixedSize(true);
        listView.setLayoutManager(layoutManager);
​
        TestAdapter adapter = new TestAdapter(getActivity(), R.layout.row_item, testarrayList);
        listView.setAdapter(adapter);
       
    }
}

3. Adapter

class TestAdapter extends RecyclerView.Adapter<TestAdapter.ViewHolder> {
    private final int resource;
    private Context context;
    private List<String> list;

    public TestAdapter(Context context, @AnyRes int resource, List<String> list) {
        this.resource = resource;
        this.context = context;
        this.list = list;
    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(context).inflate(resource, null);

        return new ViewHolder(view);
    }

    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        final String item = getItem(position);
        
        holder.title.setText(item);

    }

    @Override
    public int getItemCount() {
        return list.size();
    }

    private String getItem(int position) {
        return list.get(position);
    }

    public void clear() {
        if(null != list) {
            list.clear();
        }
    }

    public void addAll(List<String> list) {
        this.list = list;
        notifyDataSetChanged();
    }

    public class ViewHolder extends RecyclerView.ViewHolder {
        public final TextView title;

        public ViewHolder(View parent) {
            super(parent);


            title= (TextView) parent.findViewById(R.id.title);
        }
    }
}

안드로이드 공유하기에 흔히 사용하는 Intent.

공유하기 팝업을 커스텀 하고 싶을 때 list만 가져와서 dialog를 만들면 된다.

Intent shareIntent = new Intent(Intent.ACTION_SEND);
shareIntent.setType("text/plain");

List<ResolveInfo> resolveInfoList = context.getPackageManager().queryIntentActivities(shareIntent, 0);

​앱 선택 시 처리

ResolveInfo resolveInfo = resolveInfoList.get(selectPosition);
ActivityInfo activityInfo = resolveInfo.activityInfo;

ComponentName name = new ComponentName(activityInfo.applicationInfo.packageName, activityInfo.name);
shareIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
shareIntent.setComponent(name);

//TODO ssok by 추후 공유 메시지, url 변경 필요
shareIntent.putExtra(Intent.EXTRA_TEXT, "공유하고자 하는 문구");

startActivity(shareIntent);

안드로이드 앱의 cpu 사용량 구하기. 코드

            ActivityManager activity_manager = (ActivityManager)context.getSystemService(Context.ACTIVITY_SERVICE);
            List<ActivityManager.RunningAppProcessInfo> runningApps = activity_manager.getRunningAppProcesses();

           ​Runtime runtime = Runtime.getRuntime();
            Process process;
            try {
                String cmd = "top -n 1";
                process = runtime.exec(cmd);
                InputStream inputStream = process.getInputStream();
                InputStreamReader inputReader = new InputStreamReader(inputStream );
                BufferedReader bufferReader = new BufferedReader(inputReader );
                String line;

                while ((line = bufferReader.readLine()) != null) {
                    String[] segs = line.trim().split("[ ]+");

                    for (int i = 0; i < runningApps.size(); i++) {
                        if (segs[0].equalsIgnoreCase(String.valueOf(runningApps.get(i).pid))) {      <--하나의 process의 cpu만 확인하고 싶은 경우 for문을 제외하고, pid값에 원하는 process의 pid 값을 넣어 확인.
                            cpuAvail += Integer.parseInt(segs[2].replace("%", ""));  <-- 현재 사용중인 프로세스들의 총 cpu 사용량을 구하기 위한 합. 
//                          break;
                        }
                    }
                }

            } catch (Exception e) {
                e.printStackTrace();
                return 0;
            }