Android應用程序未在較高版本上運行

Question

該應用程序在Emulator（5.1）和我的手機（4.1.2）中運行良好，但它在打開時與bluestacks（4.4.2）中的「不幸應用程序停止」在真正的手機高於4.1

在Bluestacks中運行時，我得到以下錯誤。試圖改變minsdk版本和appcompact選項。

10-21 22:27:22.551 12147-12147/player.kri.com.saranplayer I/dalvikvm: Could not find method android.content.Context.getSystemService, referenced from method com.androidhive.musicplayer.MusicPlayerMainActivity.access$super 
10-21 22:27:22.551 12147-12147/player.kri.com.saranplayer W/dalvikvm: VFY: unable to resolve virtual method 524: Landroid/content/Context;.getSystemService (Ljava/lang/Class;)Ljava/lang/Object; 
10-21 22:27:22.551 12147-12147/player.kri.com.saranplayer D/dalvikvm: VFY: replacing opcode 0x6f at 0x004b 
10-21 22:27:22.551 12147-12147/player.kri.com.saranplayer I/dalvikvm: Could not find method android.app.Activity.stopLockTask, referenced from method com.androidhive.musicplayer.MusicPlayerMainActivity.access$super 
10-21 22:27:22.551 12147-12147/player.kri.com.saranplayer W/dalvikvm: VFY: unable to resolve virtual method 279: Landroid/app/Activity;.stopLockTask()V 
10-21 22:27:22.551 12147-12147/player.kri.com.saranplayer D/dalvikvm: VFY: replacing opcode 0x6f at 0x00b9 
10-21 22:27:22.551 12147-12147/player.kri.com.saranplayer I/dalvikvm: Could not find method android.app.Activity.isInMultiWindowMode, referenced from method com.androidhive.musicplayer.MusicPlayerMainActivity.access$super 
10-21 22:27:22.551 12147-12147/player.kri.com.saranplayer W/dalvikvm: VFY: unable to resolve virtual method 102: Landroid/app/Activity;.isInMultiWindowMode()Z 
10-21 22:27:22.551 12147-12147/player.kri.com.saranplayer D/dalvikvm: VFY: replacing opcode 0x6f at 0x00eb 
10-21 22:27:22.551 12147-12147/player.kri.com.saranplayer E/dalvikvm: Could not find class 'android.os.PersistableBundle', referenced from method com.androidhive.musicplayer.MusicPlayerMainActivity.access$super 
10-21 22:27:22.551 12147-12147/player.kri.com.saranplayer W/dalvikvm: VFY: unable to resolve check-cast 234 (Landroid/os/PersistableBundle;) in Lcom/androidhive/musicplayer/MusicPlayerMainActivity; 
10-21 22:27:22.551 12147-12147/player.kri.com.saranplayer D/dalvikvm: VFY: replacing opcode 0x1f at 0x00fc 
10-21 22:27:22.551 12147-12147/player.kri.com.saranplayer I/dalvikvm: Could not find method android.content.Context.getColorStateList, referenced from method com.androidhive.musicplayer.MusicPlayerMainActivity.access$super 
10-21 22:27:22.551 12147-12147/player.kri.com.saranplayer W/dalvikvm: VFY: unable to resolve virtual method 505: Landroid/content/Context;.getColorStateList (I)Landroid/content/res/ColorStateList; 
10-21 22:27:22.551 12147-12147/player.kri.com.saranplayer D/dalvikvm: VFY: replacing opcode 0x6f at 0x010c 
10-21 22:27:22.551 12147-12147/player.kri.com.saranplayer I/dalvikvm: Could not find method android.app.Activity.onVisibleBehindCanceled, referenced from method com.androidhive.musicplayer.MusicPlayerMainActivity.access$super 
10-21 22:27:22.551 12147-12147/player.kri.com.saranplayer W/dalvikvm: VFY: unable to resolve virtual method 193: Landroid/app/Activity;.onVisibleBehindCanceled()V 
10-21 22:27:22.551 12147-12147/player.kri.com.saranplayer D/dalvikvm: VFY: replacing opcode 0x6f at 0x011c 
10-21 22:27:22.551 12147-12147/player.kri.com.saranplayer I/dalvikvm: Could not find method android.content.ContextWrapper.deleteSharedPreferences, referenced from method com.androidhive.musicplayer.MusicPlayerMainActivity.access$super 

真的很感謝您的幫助。

Answer 1

根據谷歌Android工程師的說法，這是正常現象。

參考https://code.google.com/p/android/issues/detail?id=198567

當你編譯反對更高的API級別比部署的設備API級別會出現這種情況。日誌表明，有些方法不可用，並且虛擬機將用替代實現替換它們。

這只是意味着你有一個方法的引用，該方法在當前運行代碼的平臺上不可用。

解決您的問題寫一個運行時開關：

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