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add zoom QR and flashlight button
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This commit is contained in:
Shihaam Abdul Rahman
2026-05-27 23:07:01 +05:00
parent c4ad35e6b9
commit daf9b0475a
11 changed files with 175 additions and 15 deletions
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43
app/src/main/java/sh/sar/basedbank/ui/home/QrScannerActivity.kt
View File

@@ -13,6 +13,12 @@ import android.provider.Settings
import android.widget.Toast
import androidx.activity.result.contract.ActivityResultContracts
import androidx.appcompat.app.AppCompatActivity
import android.content.res.ColorStateList
import android.graphics.Color
import android.graphics.drawable.Animatable
import android.view.ScaleGestureDetector
import androidx.appcompat.content.res.AppCompatResources
import androidx.camera.core.Camera
import androidx.camera.core.CameraSelector
import androidx.core.view.ViewCompat
import androidx.core.view.WindowCompat
@@ -52,6 +58,8 @@ class QrScannerActivity : AppCompatActivity() {
textMode = ZxingCpp.TextMode.PLAIN
)
private var camera: Camera? = null
private var torchEnabled = false
private var cameraStarted = false
private val permissionLauncher = registerForActivityResult(
@@ -104,8 +112,36 @@ class QrScannerActivity : AppCompatActivity() {
}
insets
}
binding.btnCancel.setOnClickListener { finish() }
binding.btnPickImage.setOnClickListener { pickImageLauncher.launch("image/*") }
binding.zoomSlider.addOnChangeListener { _, value, fromUser ->
if (fromUser) camera?.cameraControl?.setLinearZoom(value)
}
val scaleDetector = ScaleGestureDetector(this,
object : ScaleGestureDetector.SimpleOnScaleGestureListener() {
override fun onScale(detector: ScaleGestureDetector): Boolean {
val state = camera?.cameraInfo?.zoomState?.value ?: return true
camera?.cameraControl?.setZoomRatio(
(state.zoomRatio * detector.scaleFactor)
.coerceIn(state.minZoomRatio, state.maxZoomRatio)
)
return true
}
})
binding.previewView.setOnTouchListener { _, event ->
scaleDetector.onTouchEvent(event)
true
}
binding.btnFlashlight.setOnClickListener {
torchEnabled = !torchEnabled
camera?.cameraControl?.enableTorch(torchEnabled)
val drawableRes = if (torchEnabled) R.drawable.ic_flashlight_to_on else R.drawable.ic_flashlight_to_off
val drawable = AppCompatResources.getDrawable(this, drawableRes)
binding.btnFlashlight.icon = drawable
(drawable as? Animatable)?.start()
binding.btnFlashlight.iconTint = ColorStateList.valueOf(
if (torchEnabled) Color.parseColor("#FFEB3B") else Color.WHITE
)
}
if (ContextCompat.checkSelfPermission(this, Manifest.permission.CAMERA)
== PackageManager.PERMISSION_GRANTED
@@ -179,9 +215,12 @@ class QrScannerActivity : AppCompatActivity() {
try {
provider.unbindAll()
provider.bindToLifecycle(
camera = provider.bindToLifecycle(
this, CameraSelector.DEFAULT_BACK_CAMERA, preview, analysis
)
camera?.cameraInfo?.zoomState?.observe(this@QrScannerActivity) { state ->
binding.zoomSlider.value = state.linearZoom
}
} catch (_: Exception) {
finish()
}

8
app/src/main/res/animator/flashlight_line_appear.xml Normal file
View File

@@ -0,0 +1,8 @@
<?xml version="1.0" encoding="utf-8"?>
<objectAnimator xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="250"
android:propertyName="trimPathEnd"
android:valueFrom="0"
android:valueTo="1"
android:valueType="floatType"
android:interpolator="@android:interpolator/accelerate_decelerate" />

8
app/src/main/res/animator/flashlight_line_disappear.xml Normal file
View File

@@ -0,0 +1,8 @@
<?xml version="1.0" encoding="utf-8"?>
<objectAnimator xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="250"
android:propertyName="trimPathEnd"
android:valueFrom="1"
android:valueTo="0"
android:valueType="floatType"
android:interpolator="@android:interpolator/accelerate_decelerate" />

10
app/src/main/res/drawable/ic_flashlight.xml Normal file
View File

@@ -0,0 +1,10 @@
<?xml version="1.0" encoding="utf-8"?>
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="24dp"
android:height="24dp"
android:viewportWidth="24"
android:viewportHeight="24">
<path
android:fillColor="@android:color/black"
android:pathData="M7,2v11h3v9l7,-12h-4l4,-8z" />
</vector>

18
app/src/main/res/drawable/ic_flashlight_anim_off.xml Normal file
View File

@@ -0,0 +1,18 @@
<?xml version="1.0" encoding="utf-8"?>
<!-- base for "turning off" animation: line starts invisible -->
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="24dp"
android:height="24dp"
android:viewportWidth="24"
android:viewportHeight="24">
<path
android:fillColor="@android:color/black"
android:pathData="M7,2v11h3v9l7,-12h-4l4,-8z" />
<path
android:name="line"
android:strokeColor="@android:color/black"
android:strokeWidth="2"
android:strokeLineCap="round"
android:pathData="M2,4 L22,20"
android:trimPathEnd="0" />
</vector>

18
app/src/main/res/drawable/ic_flashlight_anim_on.xml Normal file
View File

@@ -0,0 +1,18 @@
<?xml version="1.0" encoding="utf-8"?>
<!-- base for "turning on" animation: line starts fully visible -->
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="24dp"
android:height="24dp"
android:viewportWidth="24"
android:viewportHeight="24">
<path
android:fillColor="@android:color/black"
android:pathData="M7,2v11h3v9l7,-12h-4l4,-8z" />
<path
android:name="line"
android:strokeColor="@android:color/black"
android:strokeWidth="2"
android:strokeLineCap="round"
android:pathData="M2,4 L22,20"
android:trimPathEnd="1" />
</vector>

11
app/src/main/res/drawable/ic_flashlight_off.xml Normal file
View File

@@ -0,0 +1,11 @@
<?xml version="1.0" encoding="utf-8"?>
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="24dp"
android:height="24dp"
android:viewportWidth="24"
android:viewportHeight="24">
<!-- bolt with line through it (flash_off) -->
<path
android:fillColor="@android:color/black"
android:pathData="M3.27,3L2,4.27l5,5V13h3v9l3.58,-6.14L17.73,20 19,18.73 3.27,3zM17,10h-4l4,-8H7v2.18l8.46,8.46L17,10z" />
</vector>

7
app/src/main/res/drawable/ic_flashlight_to_off.xml Normal file
View File

@@ -0,0 +1,7 @@
<?xml version="1.0" encoding="utf-8"?>
<animated-vector xmlns:android="http://schemas.android.com/apk/res/android"
android:drawable="@drawable/ic_flashlight_anim_off">
<target
android:name="line"
android:animation="@animator/flashlight_line_appear" />
</animated-vector>

7
app/src/main/res/drawable/ic_flashlight_to_on.xml Normal file
View File

@@ -0,0 +1,7 @@
<?xml version="1.0" encoding="utf-8"?>
<animated-vector xmlns:android="http://schemas.android.com/apk/res/android"
android:drawable="@drawable/ic_flashlight_anim_on">
<target
android:name="line"
android:animation="@animator/flashlight_line_disappear" />
</animated-vector>

10
app/src/main/res/drawable/ic_image.xml Normal file
View File

@@ -0,0 +1,10 @@
<?xml version="1.0" encoding="utf-8"?>
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="24dp"
android:height="24dp"
android:viewportWidth="24"
android:viewportHeight="24">
<path
android:fillColor="@android:color/black"
android:pathData="M21,19V5c0,-1.1 -0.9,-2 -2,-2H5c-1.1,0 -2,0.9 -2,2v14c0,1.1 0.9,2 2,2h14c1.1,0 2,-0.9 2,-2zM8.5,13.5l2.5,3.01 3.5,-4.51 4.5,6H5l3.5,-4.5z" />
</vector>

50
app/src/main/res/layout/activity_qr_scanner.xml
View File

@@ -1,5 +1,6 @@
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@android:color/black">
@@ -11,26 +12,49 @@
<LinearLayout
android:id="@+id/btnContainer"
android:layout_width="wrap_content"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom|center_horizontal"
android:layout_marginBottom="48dp"
android:orientation="horizontal">
android:orientation="vertical"
android:paddingHorizontal="16dp">
<com.google.android.material.button.MaterialButton
android:id="@+id/btnPickImage"
style="@style/Widget.Material3.Button.TonalButton"
<com.google.android.material.slider.Slider
android:id="@+id/zoomSlider"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:valueFrom="0"
android:valueTo="1"
android:value="0"
app:labelBehavior="gone"
app:thumbColor="@android:color/white"
app:trackColorActive="@android:color/white"
app:trackColorInactive="#80FFFFFF" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:text="@string/qr_pick_image" />
android:layout_gravity="center_horizontal"
android:orientation="horizontal">
<com.google.android.material.button.MaterialButton
android:id="@+id/btnCancel"
style="@style/Widget.Material3.Button.TonalButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/back" />
<com.google.android.material.button.MaterialButton
android:id="@+id/btnPickImage"
style="@style/Widget.Material3.Button.TonalButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="8dp"
android:text="@string/qr_pick_image"
app:icon="@drawable/ic_image" />
<com.google.android.material.button.MaterialButton
android:id="@+id/btnFlashlight"
style="@style/Widget.Material3.Button.IconButton.Filled.Tonal"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:icon="@drawable/ic_flashlight_anim_on" />
</LinearLayout>
</LinearLayout>