MWP MWP - 24 days ago 13
Android Question

(android)Cant start activity => java.lang.RuntimeException: Unable to start activity ComponentInfo

Im developing an android application. But, i have one problem..
Whenever i run my app through Bluestacks, or Android emulator, i have an such error. It works on my actual phone.

java.lang.RuntimeException: Unable to start activity ComponentInfo{semo.msoft.yusearch/semo.msoft.yusearch.LoginActivity}: android.view.InflateException: Binary XML file line #2: Error inflating class <unknown>


it occured in this line

setContentView(R.layout.activity_login);


I have No Idea about this..
please help

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="semo.msoft.yusearch">

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:largeHeap="true"
android:theme="@style/AppTheme">
<activity
android:name=".LoginActivity"
android:theme="@style/Theme.Transparent">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".MainActivity"
android:label="@string/title_activity_main"
android:theme="@style/Theme.Transparent" />
<activity
android:name=".FindActivity"
android:theme="@style/Theme.YU" />
<activity
android:name=".TimeActivity"
android:theme="@style/Theme.YU" />
<activity
android:name=".LectureActivity"
android:theme="@style/Theme.YU" />
<activity
android:name=".SplashActivity"
android:noHistory="true"
android:theme="@style/Theme.Transparent" />
<activity
android:name=".ScoreActivity"
android:theme="@style/Theme.YU" />
<activity android:name=".MapActivity"
android:theme="@style/Theme.YU"></activity>
</application>

</manifest>


<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:background="@drawable/login_background"
android:orientation="vertical"
tools:context="semo.msoft.yusearch.LoginActivity">


<TextView
android:layout_marginTop="210dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingLeft="20dp"
android:text="Member Login"
android:textColor="#579ce1"/>

<LinearLayout
android:layout_marginTop="8dp"
android:layout_width="300dp"
android:layout_height="wrap_content"
android:background="@drawable/round_background"
android:layout_gravity="center"
android:orientation="horizontal">

<ImageView
android:layout_width="20dp"
android:layout_height="20dp"
android:layout_marginTop="10dp"
android:layout_marginLeft="10dp"
android:background="@drawable/icon_id"/>


<EditText
android:layout_width="200dp"
android:layout_height="40dp"
android:inputType="number"
android:ems="10"
android:id="@+id/id"
android:paddingLeft="10dp"
android:hint="학번을 입력하세요."
android:textColorHint="#b6b1b1"
android:background="#ffffff"
android:textSize="15sp"
android:textColor="@android:color/black"
android:layout_gravity="center_horizontal" />

</LinearLayout>



<LinearLayout
android:layout_marginTop="8dp"
android:layout_width="300dp"
android:layout_height="wrap_content"
android:background="@drawable/round_background"
android:layout_gravity="center"
android:orientation="horizontal">

<ImageView
android:layout_width="20dp"
android:layout_height="20dp"
android:layout_marginTop="10dp"
android:layout_marginLeft="10dp"
android:background="@drawable/pw"/>


<EditText
android:layout_width="200dp"
android:layout_height="40dp"
android:inputType="textPassword"
android:ems="20"

android:id="@+id/pw"
android:paddingLeft="10dp"
android:hint="비밀번호를 입력하세요."
android:textColorHint="#b6b1b1"
android:textSize="15sp"
android:textColor="@android:color/black"
android:background="#ffffff"
android:layout_gravity="center_horizontal" />

</LinearLayout>

<Button
android:layout_width="300dp"
android:layout_height="40dp"
android:id="@+id/login"
android:textColor="#ffffff"
android:textStyle="bold"
android:text="로그인"
android:background="@drawable/rounc_login"
android:layout_marginTop="8dp"
android:layout_gravity="center_horizontal"/>

</LinearLayout>

MWP MWP
Answer

I solved it. If drawable resources are located V21 folder, it can't make an error under some specific version of device. Just put Drawable resource to Drawable Folder.

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