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/** | |
* This method is called when the plus button is clicked. | |
*/ | |
public void increment(View view) { | |
if (quantity == 100) { | |
// Show an error message as a toast | |
Toast.makeText(this, "You cannot have more than 100 coffees", Toast.LENGTH_SHORT).show(); | |
// Exit this method early because there's nothing left to do | |
return; | |
} |
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package com.example.android.justjava; | |
import android.os.Bundle; | |
import android.support.v7.app.AppCompatActivity; | |
import android.view.View; | |
import android.widget.CheckBox; | |
import android.widget.TextView; | |
/** | |
* This app displays an order form to order coffee. |
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<ScrollView xmlns:android="http://schemas.android.com/apk/res/android" | |
xmlns:tools="http://schemas.android.com/tools" | |
android:layout_width="match_parent" | |
android:layout_height="match_parent" | |
tools:context=".MainActivity"> | |
<LinearLayout | |
android:layout_width="match_parent" | |
android:layout_height="match_parent" | |
android:orientation="vertical" |
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int numberOfSmoothiesTillPrize = 10; | |
if (numberOfSmoothiesTillPrize > 9) { | |
Log.v("SmoothieActivity", "Congratulations, you get a free smoothie!"); | |
numberOfSmoothiesTillPrize = numberOfSmoothiesTillPrize - 10; | |
} else { | |
Log.v("SmoothieActivity", "No free smoothie this time."); | |
} | |
Log.v("SmoothieActivity", "You currently have " + numberOfSmoothiesTillPrize + " out of 10 smoothies needed for your next free smoothie."); |
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int numberOfEmailsInInbox = 0; | |
int numberOfDraftEmails = 2; | |
String emailMessage = "You have " + numberOfEmailsInInbox + " emails. "; | |
String draftMessage = "You have " + numberOfDraftEmails + " email drafts."; | |
if (numberOfEmailsInInbox == 0) { | |
emailMessage = "You have no new messages. "; | |
} | |
if (numberOfDraftEmails == 0) { | |
draftMessage = "You have no new drafts."; |
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boolean isRaining = false; | |
Log.v("WeatherActivity", "Thank you for using the WhetherWeather App."); | |
if (isRaining) { | |
Log.v("WeatherActivity", "It's raining, better bring an umbrella."); | |
} else { | |
Log.v("WeatherActivity", "It's unlikely to rain."); | |
} |
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boolean isRaining = true; | |
if (isRaining) { | |
Log.v("WeatherActivity", "It's raining, better bring an umbrella."); | |
} else { | |
Log.v("WeatherActivity", "It's unlikely to rain."); | |
} | |
Log.v("WeatherActivity", "Thank you for using the WhetherWeather App."); |
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/** | |
* Displays an image, such as an icon. | |
*/ | |
public class ImageView extends View { | |
// Resource ID for the source image that should be displayed in the ImageView. | |
private int mImageId; | |
// Context of the app | |
private Context mContext; |
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/** | |
* Displays text to the user. | |
*/ | |
public class TextView extends View { | |
// String value | |
private String mText; | |
// Text color of the text | |
private int mTextColor; |
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/** | |
* Get the email account name. | |
* | |
* @return the name of the account. | |
*/ | |
private String getAccountName() { | |
return "[email protected]"; | |
return "[email protected]"; | |
} |