WindowManagerを使用したビューの複製

Question

着信時にカードを表示する必要のあるアプリケーションをビルドしました。 Kitkatでは正常に動作しますが、Android L、M、Nではカードが2回表示されます。なぜですか？

結果（キットカット）

結果（ロリポップ-ヌガー-マシュマロ）

私のコード

package tutorials.hackro.com.callincoming; 

import android.content.BroadcastReceiver; 
import android.content.ContentResolver; 
import android.content.Context; 
import android.content.Intent; 
import android.database.Cursor; 
import android.graphics.PixelFormat; 
import android.net.Uri; 
import android.os.Build; 
import android.os.Bundle; 
import android.provider.ContactsContract; 
import android.telephony.PhoneStateListener; 
import android.telephony.TelephonyManager; 
import android.util.Log; 
import android.view.Display; 
import android.view.Gravity; 
import android.view.LayoutInflater; 
import android.view.MotionEvent; 
import android.view.View; 
import android.view.WindowManager; 
import android.widget.Button; 
import android.widget.LinearLayout; 
import android.widget.TextView; 

/** 
* Created by hackro on 4/03/17. 
*/ 
public class MyPhoneBroadcastReceiver extends BroadcastReceiver { 

    private WindowManager wm; 
    private WindowManager.LayoutParams params; 
    private LinearLayout ly; 
    private View view; 
    private TextView lblCelular,nameContact; 
    private Button btnExpediente; 
    private int height; 
    private Context context; 
    private String number; 
    private Display display; 
    private LayoutInflater mInflater; 
    private Bundle bundle; 
    private TelephonyManager telephony; 
    private boolean callincoming; 
    public void onReceive(final Context cc, Intent intent) { 
     this.context= cc; 
     bundle = intent.getExtras(); 
     number = bundle.getString("incoming_number"); 
     intializeElements(); 
     initializeUI(); 
     initializeValuesElements(); 
     events(); 

     telephony = (TelephonyManager) context 
       .getSystemService(Context.TELEPHONY_SERVICE); 
     telephony.listen(phoneStateListener, PhoneStateListener.LISTEN_CALL_STATE); 

    } 

    private PhoneStateListener phoneStateListener = new PhoneStateListener() { 
     public void onCallStateChanged(int state, String incomingNumber) { 

      if (state == TelephonyManager.CALL_STATE_RINGING) { 
       if(!callincoming){ 
        wm.addView(ly, params); 
        Log.e("a","a"); 
        callincoming = !callincoming; 
       } 
      } 
      if (state == TelephonyManager.CALL_STATE_OFFHOOK) { 
       System.exit(0); 

      } 

      if (state == TelephonyManager.CALL_STATE_IDLE) { 
       System.exit(0); 
      } 
     } 
    }; 


    private void intializeElements() { 
     wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); 
     ly = new LinearLayout(context); 
     mInflater = LayoutInflater.from(context); 
     view = mInflater.inflate(R.layout.call,null); 
     display = wm.getDefaultDisplay(); 
     height = display.getHeight(); 
     initializeParams(); 
     ly.addView(view,params); 
    } 


    public void events(){ 

     ly.setOnTouchListener(new View.OnTouchListener() { 
      private int initialX; 
      private int initialY; 
      private float initialTouchX; 
      private float initialTouchY; 

      @Override public boolean onTouch(View v, MotionEvent event) { 
       switch (event.getAction()) { 
        case MotionEvent.ACTION_DOWN: 
         initialX = params.x; 
         initialY = params.y; 
         initialTouchX = event.getRawX(); 
         initialTouchY = event.getRawY(); 
         return true; 
        case MotionEvent.ACTION_UP: 
         return true; 
        case MotionEvent.ACTION_MOVE: 
         params.x = initialX + (int) (event.getRawX() - initialTouchX); 
         params.y = initialY + (int) (event.getRawY() - initialTouchY); 
         wm.updateViewLayout(ly, params); 
         return true; 
       } 
       return false; 
      } 
     }); 




     btnExpediente.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View view) { 
       params.height = 0; 
       ly.removeView(view); 
       wm.updateViewLayout(ly,params); 
       Intent i = new Intent(context,Main2Activity.class); 
       i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 
       context.startActivity(i); 
      } 
     }); 

    } 
    public static String getContactName(Context context, String phoneNumber) { 
     ContentResolver cr = context.getContentResolver(); 
     Uri uri = Uri.withAppendedPath(ContactsContract.PhoneLookup.CONTENT_FILTER_URI, Uri.encode(phoneNumber)); 
     Cursor cursor = cr.query(uri, new String[]{ContactsContract.PhoneLookup.DISPLAY_NAME}, null, null, null); 
     if (cursor == null) { 
      return null; 
     } 
     String contactName = null; 
     if(cursor.moveToFirst()) { 
      contactName = cursor.getString(cursor.getColumnIndex(ContactsContract.PhoneLookup.DISPLAY_NAME)); 
     } 
     if(cursor != null && !cursor.isClosed()) { 
      cursor.close(); 
     } 
     return contactName; 
    } 

    private void initializeParams(){ 

     params = new WindowManager.LayoutParams(
       WindowManager.LayoutParams.MATCH_PARENT, 
       WindowManager.LayoutParams.MATCH_PARENT, WindowManager.LayoutParams.TYPE_SYSTEM_ALERT | 
       WindowManager.LayoutParams.TYPE_SYSTEM_OVERLAY, 
       WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL | 
         WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE, 
       PixelFormat.TRANSPARENT); 

     int SDK_INT = android.os.Build.VERSION.SDK_INT; 
     if(SDK_INT >= Build.VERSION_CODES.KITKAT && SDK_INT <= Build.VERSION_CODES.LOLLIPOP){ 
      params.height = (height/2); 
     } 
     else if(SDK_INT >= Build.VERSION_CODES.LOLLIPOP && SDK_INT <= Build.VERSION_CODES.M){ 
      params.height = (height/4) + (height/15); 
     } 
     else if(SDK_INT >= Build.VERSION_CODES.M && SDK_INT <= Build.VERSION_CODES.N){ 
      params.height = (height/4) + (height/15); 
     } 

     else if(SDK_INT >= Build.VERSION_CODES.N){ 
      params.height = (height/4) + (height/15); 
     } 
     params.height = (height/2); 

     params.width = WindowManager.LayoutParams.MATCH_PARENT; 
     params.gravity = Gravity.TOP; 
     params.format = PixelFormat.TRANSLUCENT; 

    } 

    public void initializeUI(){ 
     lblCelular = (TextView) view.findViewById(R.id.lblCelular); 
     nameContact= (TextView) view.findViewById(R.id.nameContact); 
     btnExpediente = (Button) view.findViewById(R.id.btnExpediente); 

    } 

    public void initializeValuesElements(){ 
     nameContact.setText(getContactName(context,number)); 
     lblCelular.setText(number); 
    } 


    public void onDestroy() { 
     telephony.listen(null, PhoneStateListener.LISTEN_NONE); 
    } 
} 

Answer 1

私は私の問題を解決しました。

問題は `一度だけ（）と呼ばれるonReceive複数のコールonReceive

SOLUTION

public static final String TAG = "PHONE STATE"; 
    private static String mLastState; 

    String state = intent.getStringExtra(TelephonyManager.EXTRA_STATE); 

     if (!state.equals(mLastState)) { 
      mLastState = state; 
      Log.e(TAG, state); 

      telephony = (TelephonyManager) context 
        .getSystemService(Context.TELEPHONY_SERVICE); 
      telephony.listen(phoneStateListener, PhoneStateListener.LISTEN_CALL_STATE); 

     } 

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