Raghav Soodの回答のKotlinバージョン
評価者.kt
class Rater {
companion object {
private const val APP_TITLE = "App Name"
private const val APP_NAME = "com.example.name"
private const val RATER_KEY = "rater_key"
private const val LAUNCH_COUNTER_KEY = "launch_counter_key"
private const val DO_NOT_SHOW_AGAIN_KEY = "do_not_show_again_key"
private const val FIRST_LAUNCH_KEY = "first_launch_key"
private const val DAYS_UNTIL_PROMPT: Int = 3
private const val LAUNCHES_UNTIL_PROMPT: Int = 3
fun start(mContext: Context) {
val prefs: SharedPreferences = mContext.getSharedPreferences(RATER_KEY, 0)
if (prefs.getBoolean(DO_NOT_SHOW_AGAIN_KEY, false)) {
return
}
val editor: Editor = prefs.edit()
val launchesCounter: Long = prefs.getLong(LAUNCH_COUNTER_KEY, 0) + 1;
editor.putLong(LAUNCH_COUNTER_KEY, launchesCounter)
var firstLaunch: Long = prefs.getLong(FIRST_LAUNCH_KEY, 0)
if (firstLaunch == 0L) {
firstLaunch = System.currentTimeMillis()
editor.putLong(FIRST_LAUNCH_KEY, firstLaunch)
}
if (launchesCounter >= LAUNCHES_UNTIL_PROMPT) {
if (System.currentTimeMillis() >= firstLaunch +
(DAYS_UNTIL_PROMPT * 24 * 60 * 60 * 1000)
) {
showRateDialog(mContext, editor)
}
}
editor.apply()
}
fun showRateDialog(mContext: Context, editor: Editor) {
Dialog(mContext).apply {
setTitle("Rate $APP_TITLE")
val ll = LinearLayout(mContext)
ll.orientation = LinearLayout.VERTICAL
TextView(mContext).apply {
text =
"If you enjoy using $APP_TITLE, please take a moment to rate it. Thanks for your support!"
width = 240
setPadding(4, 0, 4, 10)
ll.addView(this)
}
Button(mContext).apply {
text = "Rate $APP_TITLE"
setOnClickListener {
mContext.startActivity(
Intent(
Intent.ACTION_VIEW,
Uri.parse("market://details?id=$APP_NAME")
)
);
dismiss()
}
ll.addView(this)
}
Button(mContext).apply {
text = "Remind me later"
setOnClickListener {
dismiss()
};
ll.addView(this)
}
Button(mContext).apply {
text = "No, thanks"
setOnClickListener {
editor.putBoolean(DO_NOT_SHOW_AGAIN_KEY, true);
editor.commit()
dismiss()
};
ll.addView(this)
}
setContentView(ll)
show()
}
}
}
}
最適化された回答
評価者.kt
class Rater {
companion object {
fun start(context: Context) {
val prefs: SharedPreferences = context.getSharedPreferences(RATER_KEY, 0)
if (prefs.getBoolean(DO_NOT_SHOW_AGAIN_KEY, false)) {
return
}
val editor: Editor = prefs.edit()
val launchesCounter: Long = prefs.getLong(LAUNCH_COUNTER_KEY, 0) + 1;
editor.putLong(LAUNCH_COUNTER_KEY, launchesCounter)
var firstLaunch: Long = prefs.getLong(FIRST_LAUNCH_KEY, 0)
if (firstLaunch == 0L) {
firstLaunch = System.currentTimeMillis()
editor.putLong(FIRST_LAUNCH_KEY, firstLaunch)
}
if (launchesCounter >= LAUNCHES_UNTIL_PROMPT) {
if (System.currentTimeMillis() >= firstLaunch +
(DAYS_UNTIL_PROMPT * 24 * 60 * 60 * 1000)
) {
showRateDialog(context, editor)
}
}
editor.apply()
}
fun showRateDialog(context: Context, editor: Editor) {
Dialog(context).apply {
setTitle("Rate $APP_TITLE")
LinearLayout(context).let { layout ->
layout.orientation = LinearLayout.VERTICAL
setDescription(context, layout)
setPositiveAnswer(context, layout)
setNeutralAnswer(context, layout)
setNegativeAnswer(context, editor, layout)
setContentView(layout)
show()
}
}
}
private fun setDescription(context: Context, layout: LinearLayout) {
TextView(context).apply {
text = context.getString(R.string.rate_description, APP_TITLE)
width = 240
setPadding(4, 0, 4, 10)
layout.addView(this)
}
}
private fun Dialog.setPositiveAnswer(
context: Context,
layout: LinearLayout
) {
Button(context).apply {
text = context.getString(R.string.rate_now)
setOnClickListener {
context.startActivity(
Intent(
Intent.ACTION_VIEW,
Uri.parse(context.getString(R.string.market_uri, APP_NAME))
)
);
dismiss()
}
layout.addView(this)
}
}
private fun Dialog.setNeutralAnswer(
context: Context,
layout: LinearLayout
) {
Button(context).apply {
text = context.getString(R.string.remind_later)
setOnClickListener {
dismiss()
};
layout.addView(this)
}
}
private fun Dialog.setNegativeAnswer(
context: Context,
editor: Editor,
layout: LinearLayout
) {
Button(context).apply {
text = context.getString(R.string.no_thanks)
setOnClickListener {
editor.putBoolean(DO_NOT_SHOW_AGAIN_KEY, true);
editor.commit()
dismiss()
};
layout.addView(this)
}
}
}
}
Constants.kt
object Constants {
const val APP_TITLE = "App Name"
const val APP_NAME = "com.example.name"
const val RATER_KEY = "rater_key"
const val LAUNCH_COUNTER_KEY = "launch_counter_key"
const val DO_NOT_SHOW_AGAIN_KEY = "do_not_show_again_key"
const val FIRST_LAUNCH_KEY = "first_launch_key"
const val DAYS_UNTIL_PROMPT: Int = 3
const val LAUNCHES_UNTIL_PROMPT: Int = 3
}
strings.xml
<resources>
<string name="rate_description">If you enjoy using %1$s, please take a moment to rate it. Thanks for your support!</string>
<string name="rate_now">Rate now</string>
<string name="no_thanks">No, thanks</string>
<string name="remind_later">Remind me later</string>
<string name="market_uri">market://details?id=%1$s</string>
</resources>
