Dev Kim Dev Kim - 5 months ago 101
Java Question

How to resolve this error VFY: unable to resolve virtual method

I am using android studio 2.0 and in last time I upgrade jdk 7 to jdk 8 and I'm making some changes to file gradle but now I am getting this error

E/InstantRun: Could not find slices in APK; aborting.
I/dalvikvm: Could not find method android.content.Context.getSystemService, referenced from method com.mstr.malik.elbalaapps.ControlPanel.access$super
W/dalvikvm: VFY: unable to resolve virtual method 435: Landroid/content/Context;.getSystemService (Ljava/lang/Class;)Ljava/lang/Object;
D/dalvikvm: VFY: replacing opcode 0x6f at 0x004b
I/dalvikvm: Could not find method android.app.Activity.stopLockTask, referenced from method com.mstr.malik.elbalaapps.ControlPanel.access$super
W/dalvikvm: VFY: unable to resolve virtual method 231: Landroid/app/Activity;.stopLockTask ()V
D/dalvikvm: VFY: replacing opcode 0x6f at 0x00b9
E/dalvikvm: Could not find class 'android.os.PersistableBundle', referenced from method com.mstr.malik.elbalaapps.ControlPanel.access$super
W/dalvikvm: VFY: unable to resolve check-cast 224 (Landroid/os/PersistableBundle;) in Lcom/mstr/malik/elbalaapps/ControlPanel;
D/dalvikvm: VFY: replacing opcode 0x1f at 0x00f1
I/dalvikvm: Could not find method android.content.Context.getColorStateList, referenced from method com.mstr.malik.elbalaapps.ControlPanel.access$super
W/dalvikvm: VFY: unable to resolve virtual method 417: Landroid/content/Context;.getColorStateList (I)Landroid/content/res/ColorStateList;
D/dalvikvm: VFY: replacing opcode 0x6f at 0x0101
I/dalvikvm: Could not find method android.app.Activity.onVisibleBehindCanceled, referenced from method com.mstr.malik.elbalaapps.ControlPanel.access$super
W/dalvikvm: VFY: unable to resolve virtual method 154: Landroid/app/Activity;.onVisibleBehindCanceled ()V
D/dalvikvm: VFY: replacing opcode 0x6f at 0x0111
I/dalvikvm: Could not find method android.app.Activity.onWindowStartingActionMode, referenced from method com.mstr.malik.elbalaapps.ControlPanel.access$super
W/dalvikvm: VFY: unable to resolve virtual method 158: Landroid/app/Activity;.onWindowStartingActionMode (Landroid/view/ActionMode$Callback;I)Landroid/view/ActionMode;
D/dalvikvm: VFY: replacing opcode 0x6f at 0x0137
E/dalvikvm: Could not find class 'android.os.PersistableBundle', referenced from method com.mstr.malik.elbalaapps.ControlPanel.access$super
W/dalvikvm: VFY: unable to resolve check-cast 224 (Landroid/os/PersistableBundle;) in Lcom/mstr/malik/elbalaapps/ControlPanel;
D/dalvikvm: VFY: replacing opcode 0x1f at 0x019a


An this is gradle file

apply plugin: 'com.android.application'

android {
compileSdkVersion 23
buildToolsVersion "24.0.0 rc3"

defaultConfig {
applicationId "com.mstr.malik.elbalaapps"
minSdkVersion 18
targetSdkVersion 23
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}

dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.3.0'
}


How can I handle the error, I have tried to chanfe version of compile compile 'com.android.support:appcompat-v7:23.3.0' to compile 'com.android.support:appcompat-v7:23.0.0' It also crash, How can I do it?
thanks in advance

Answer

If you check in runtime the Android version you can safely ignore this warnings. It just means that you have a reference to a method which is not available on that platform where you code currently runs on. You just need to make sure that you don't use newer APIs on older platforms. Normally lint will warn you if you do something wrong in release builds. As long you keep that in mind you don't need to worry about it.

Just as an example for such an runtime switch:

if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
    // You can use here an API which was added in Lollipop.
}