java/com/android/dialer/util/DialerUtils.java - platform/packages/apps/Dialer - Gitiles

 /*
  * Copyright (C) 2014 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
 package com.android.dialer.util;

 import android.app.AlertDialog;
 import android.content.ActivityNotFoundException;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.DialogInterface.OnClickListener;
 import android.content.Intent;
 import android.graphics.Point;
 import android.os.Build.VERSION;
 import android.os.Build.VERSION_CODES;
 import android.os.Bundle;
 import android.telecom.TelecomManager;
 import android.telephony.TelephonyManager;
 import android.text.BidiFormatter;
 import android.text.TextDirectionHeuristics;
 import android.view.View;
 import android.view.inputmethod.InputMethodManager;
 import android.widget.Toast;
 import com.android.dialer.common.LogUtil;
 import com.android.dialer.telecom.TelecomUtil;
 import java.io.File;
 import java.util.Iterator;
 import java.util.Random;

 /** General purpose utility methods for the Dialer. */
 public class DialerUtils {

   /**
    * Prefix on a dialed number that indicates that the call should be placed through the Wireless
    * Priority Service.
    */
   private static final String WPS_PREFIX = "*272";

   public static final String FILE_PROVIDER_CACHE_DIR = "my_cache";

   private static final Random RANDOM = new Random();

   /**
    * Attempts to start an activity and displays a toast with the default error message if the
    * activity is not found, instead of throwing an exception.
    *
    * @param context to start the activity with.
    * @param intent to start the activity with.
    */
   public static void startActivityWithErrorToast(Context context, Intent intent) {
     startActivityWithErrorToast(context, intent, R.string.activity_not_available);
   }

   /**
    * Attempts to start an activity and displays a toast with a provided error message if the
    * activity is not found, instead of throwing an exception.
    *
    * @param context to start the activity with.
    * @param intent to start the activity with.
    * @param msgId Resource ID of the string to display in an error message if the activity is not
    *     found.
    */
   public static void startActivityWithErrorToast(
       final Context context, final Intent intent, int msgId) {
     try {
       if ((Intent.ACTION_CALL.equals(intent.getAction()))) {
         // All dialer-initiated calls should pass the touch point to the InCallUI
         Point touchPoint = TouchPointManager.getInstance().getPoint();
         if (touchPoint.x != 0 || touchPoint.y != 0) {
           Bundle extras;
           // Make sure to not accidentally clobber any existing extras
           if (intent.hasExtra(TelecomManager.EXTRA_OUTGOING_CALL_EXTRAS)) {
             extras = intent.getParcelableExtra(TelecomManager.EXTRA_OUTGOING_CALL_EXTRAS);
           } else {
             extras = new Bundle();
           }
           extras.putParcelable(TouchPointManager.TOUCH_POINT, touchPoint);
           intent.putExtra(TelecomManager.EXTRA_OUTGOING_CALL_EXTRAS, extras);
         }

         if (shouldWarnForOutgoingWps(context, intent.getData().getSchemeSpecificPart())) {
           LogUtil.i(
               "DialUtils.startActivityWithErrorToast",
               "showing outgoing WPS dialog before placing call");
           AlertDialog.Builder builder = new AlertDialog.Builder(context);
           builder.setMessage(R.string.outgoing_wps_warning);
           builder.setPositiveButton(
               R.string.dialog_continue,
               new OnClickListener() {
                 @Override
                 public void onClick(DialogInterface dialog, int which) {
                   placeCallOrMakeToast(context, intent);
                 }
               });
           builder.setNegativeButton(android.R.string.cancel, null);
           builder.create().show();
         } else {
           placeCallOrMakeToast(context, intent);
         }
       } else {
         context.startActivity(intent);
       }
     } catch (ActivityNotFoundException e) {
       Toast.makeText(context, msgId, Toast.LENGTH_SHORT).show();
     }
   }

   private static void placeCallOrMakeToast(Context context, Intent intent) {
     final boolean hasCallPermission = TelecomUtil.placeCall(context, intent);
     if (!hasCallPermission) {
       // TODO: Make calling activity show request permission dialog and handle
       // callback results appropriately.
       Toast.makeText(context, "Cannot place call without Phone permission", Toast.LENGTH_SHORT)
           .show();
     }
   }

   /**
    * Returns whether the user should be warned about an outgoing WPS call. This checks if there is a
    * currently active call over LTE. Regardless of the country or carrier, the radio will drop an
    * active LTE call if a WPS number is dialed, so this warning is necessary.
    */
   private static boolean shouldWarnForOutgoingWps(Context context, String number) {
     if (number != null && number.startsWith(WPS_PREFIX)) {
       TelephonyManager telephonyManager = context.getSystemService(TelephonyManager.class);
       boolean isOnVolte =
           VERSION.SDK_INT >= VERSION_CODES.N
               && telephonyManager.getVoiceNetworkType() == TelephonyManager.NETWORK_TYPE_LTE;
       boolean hasCurrentActiveCall =
           telephonyManager.getCallState() == TelephonyManager.CALL_STATE_OFFHOOK;
       return isOnVolte && hasCurrentActiveCall;
     }
     return false;
   }

   /**
    * Closes an {@link AutoCloseable}, silently ignoring any checked exceptions. Does nothing if
    * null.
    *
    * @param closeable to close.
    */
   public static void closeQuietly(AutoCloseable closeable) {
     if (closeable != null) {
       try {
         closeable.close();
       } catch (RuntimeException rethrown) {
         throw rethrown;
       } catch (Exception ignored) {
       }
     }
   }

   /**
    * Joins a list of {@link CharSequence} into a single {@link CharSequence} seperated by ", ".
    *
    * @param list List of char sequences to join.
    * @return Joined char sequences.
    */
   public static CharSequence join(Iterable<CharSequence> list) {
     StringBuilder sb = new StringBuilder();
     final BidiFormatter formatter = BidiFormatter.getInstance();
     final CharSequence separator = ", ";

     Iterator<CharSequence> itr = list.iterator();
     boolean firstTime = true;
     while (itr.hasNext()) {
       if (firstTime) {
         firstTime = false;
       } else {
         sb.append(separator);
       }
       // Unicode wrap the elements of the list to respect RTL for individual strings.
       sb.append(
           formatter.unicodeWrap(itr.next().toString(), TextDirectionHeuristics.FIRSTSTRONG_LTR));
     }

     // Unicode wrap the joined value, to respect locale's RTL ordering for the whole list.
     return formatter.unicodeWrap(sb.toString());
   }

   public static void showInputMethod(View view) {
     final InputMethodManager imm =
         (InputMethodManager) view.getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
     if (imm != null) {
       imm.showSoftInput(view, 0);
     }
   }

   public static void hideInputMethod(View view) {
     final InputMethodManager imm =
         (InputMethodManager) view.getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
     if (imm != null) {
       imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
     }
   }

   /**
    * Create a File in the cache directory that Dialer's FileProvider knows about so they can be
    * shared to other apps.
    */
   public static File createShareableFile(Context context) {
     long fileId = Math.abs(RANDOM.nextLong());
     File parentDir = new File(context.getCacheDir(), FILE_PROVIDER_CACHE_DIR);
     if (!parentDir.exists()) {
       parentDir.mkdirs();
     }
     return new File(parentDir, String.valueOf(fileId));
   }
 }
	/*
	* Copyright (C) 2014 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/
	package com.android.dialer.util;

	import android.app.AlertDialog;
	import android.content.ActivityNotFoundException;
	import android.content.Context;
	import android.content.DialogInterface;
	import android.content.DialogInterface.OnClickListener;
	import android.content.Intent;
	import android.graphics.Point;
	import android.os.Build.VERSION;
	import android.os.Build.VERSION_CODES;
	import android.os.Bundle;
	import android.telecom.TelecomManager;
	import android.telephony.TelephonyManager;
	import android.text.BidiFormatter;
	import android.text.TextDirectionHeuristics;
	import android.view.View;
	import android.view.inputmethod.InputMethodManager;
	import android.widget.Toast;
	import com.android.dialer.common.LogUtil;
	import com.android.dialer.telecom.TelecomUtil;
	import java.io.File;
	import java.util.Iterator;
	import java.util.Random;

	/** General purpose utility methods for the Dialer. */
	public class DialerUtils {

	/**
	* Prefix on a dialed number that indicates that the call should be placed through the Wireless
	* Priority Service.
	*/
	private static final String WPS_PREFIX = "*272";

	public static final String FILE_PROVIDER_CACHE_DIR = "my_cache";

	private static final Random RANDOM = new Random();

	/**
	* Attempts to start an activity and displays a toast with the default error message if the
	* activity is not found, instead of throwing an exception.
	*
	* @param context to start the activity with.
	* @param intent to start the activity with.
	*/
	public static void startActivityWithErrorToast(Context context, Intent intent) {
	startActivityWithErrorToast(context, intent, R.string.activity_not_available);
	}

	/**
	* Attempts to start an activity and displays a toast with a provided error message if the
	* activity is not found, instead of throwing an exception.
	*
	* @param context to start the activity with.
	* @param intent to start the activity with.
	* @param msgId Resource ID of the string to display in an error message if the activity is not
	* found.
	*/
	public static void startActivityWithErrorToast(
	final Context context, final Intent intent, int msgId) {
	try {
	if ((Intent.ACTION_CALL.equals(intent.getAction()))) {
	// All dialer-initiated calls should pass the touch point to the InCallUI
	Point touchPoint = TouchPointManager.getInstance().getPoint();
	if (touchPoint.x != 0 \|\| touchPoint.y != 0) {
	Bundle extras;
	// Make sure to not accidentally clobber any existing extras
	if (intent.hasExtra(TelecomManager.EXTRA_OUTGOING_CALL_EXTRAS)) {
	extras = intent.getParcelableExtra(TelecomManager.EXTRA_OUTGOING_CALL_EXTRAS);
	} else {
	extras = new Bundle();
	}
	extras.putParcelable(TouchPointManager.TOUCH_POINT, touchPoint);
	intent.putExtra(TelecomManager.EXTRA_OUTGOING_CALL_EXTRAS, extras);
	}

	if (shouldWarnForOutgoingWps(context, intent.getData().getSchemeSpecificPart())) {
	LogUtil.i(
	"DialUtils.startActivityWithErrorToast",
	"showing outgoing WPS dialog before placing call");
	AlertDialog.Builder builder = new AlertDialog.Builder(context);
	builder.setMessage(R.string.outgoing_wps_warning);
	builder.setPositiveButton(
	R.string.dialog_continue,
	new OnClickListener() {
	@Override
	public void onClick(DialogInterface dialog, int which) {
	placeCallOrMakeToast(context, intent);
	}
	});
	builder.setNegativeButton(android.R.string.cancel, null);
	builder.create().show();
	} else {
	placeCallOrMakeToast(context, intent);
	}
	} else {
	context.startActivity(intent);
	}
	} catch (ActivityNotFoundException e) {
	Toast.makeText(context, msgId, Toast.LENGTH_SHORT).show();
	}
	}

	private static void placeCallOrMakeToast(Context context, Intent intent) {
	final boolean hasCallPermission = TelecomUtil.placeCall(context, intent);
	if (!hasCallPermission) {
	// TODO: Make calling activity show request permission dialog and handle
	// callback results appropriately.
	Toast.makeText(context, "Cannot place call without Phone permission", Toast.LENGTH_SHORT)
	.show();
	}
	}

	/**
	* Returns whether the user should be warned about an outgoing WPS call. This checks if there is a
	* currently active call over LTE. Regardless of the country or carrier, the radio will drop an
	* active LTE call if a WPS number is dialed, so this warning is necessary.
	*/
	private static boolean shouldWarnForOutgoingWps(Context context, String number) {
	if (number != null && number.startsWith(WPS_PREFIX)) {
	TelephonyManager telephonyManager = context.getSystemService(TelephonyManager.class);
	boolean isOnVolte =
	VERSION.SDK_INT >= VERSION_CODES.N
	&& telephonyManager.getVoiceNetworkType() == TelephonyManager.NETWORK_TYPE_LTE;
	boolean hasCurrentActiveCall =
	telephonyManager.getCallState() == TelephonyManager.CALL_STATE_OFFHOOK;
	return isOnVolte && hasCurrentActiveCall;
	}
	return false;
	}

	/**
	* Closes an {@link AutoCloseable}, silently ignoring any checked exceptions. Does nothing if
	* null.
	*
	* @param closeable to close.
	*/
	public static void closeQuietly(AutoCloseable closeable) {
	if (closeable != null) {
	try {
	closeable.close();
	} catch (RuntimeException rethrown) {
	throw rethrown;
	} catch (Exception ignored) {
	}
	}
	}

	/**
	* Joins a list of {@link CharSequence} into a single {@link CharSequence} seperated by ", ".
	*
	* @param list List of char sequences to join.
	* @return Joined char sequences.
	*/
	public static CharSequence join(Iterable<CharSequence> list) {
	StringBuilder sb = new StringBuilder();
	final BidiFormatter formatter = BidiFormatter.getInstance();
	final CharSequence separator = ", ";

	Iterator<CharSequence> itr = list.iterator();
	boolean firstTime = true;
	while (itr.hasNext()) {
	if (firstTime) {
	firstTime = false;
	} else {
	sb.append(separator);
	}
	// Unicode wrap the elements of the list to respect RTL for individual strings.
	sb.append(
	formatter.unicodeWrap(itr.next().toString(), TextDirectionHeuristics.FIRSTSTRONG_LTR));
	}

	// Unicode wrap the joined value, to respect locale's RTL ordering for the whole list.
	return formatter.unicodeWrap(sb.toString());
	}

	public static void showInputMethod(View view) {
	final InputMethodManager imm =
	(InputMethodManager) view.getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
	if (imm != null) {
	imm.showSoftInput(view, 0);
	}
	}

	public static void hideInputMethod(View view) {
	final InputMethodManager imm =
	(InputMethodManager) view.getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
	if (imm != null) {
	imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
	}
	}

	/**
	* Create a File in the cache directory that Dialer's FileProvider knows about so they can be
	* shared to other apps.
	*/
	public static File createShareableFile(Context context) {
	long fileId = Math.abs(RANDOM.nextLong());
	File parentDir = new File(context.getCacheDir(), FILE_PROVIDER_CACHE_DIR);
	if (!parentDir.exists()) {
	parentDir.mkdirs();
	}
	return new File(parentDir, String.valueOf(fileId));
	}
	}