Hi I try to create a splash screen but it’s not working and also the login screen isn’t working!! I test it in android 4.4.4
1.MainActivity.class
`
public class MainActivity extends AppCompatActivity {
/** Duration of wait **/
private final int SPLASH_TIME_OUT = 5000;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
new Handler().postDelayed(new Runnable(){
@Override
public void run() {
Intent startLoginActivity = new Intent(MainActivity.this, login.class);
startActivity(startLoginActivity);
finish();
}
}, SPLASH_TIME_OUT);
}
}
`
1-1 activity_main.xml the ImageView + No Errors In The Code!
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="@+id/imageView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:contentDescription="@string/todo" />
</LinearLayout>
2.login.class : This Activity Not Working (White Screen)
`
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="horizontal" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<EditText
android:id="@+id/editText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_alignParentBottom="true"
android:layout_marginStart="78dp"
android:layout_marginLeft="78dp"
android:layout_marginTop="429dp"
android:layout_marginEnd="120dp"
android:layout_marginRight="120dp"
android:layout_marginBottom="257dp"
android:ems="10"
android:hint="@string/uname"
android:importantForAutofill="no"
android:inputType="textPersonName"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.596"
/>
<EditText
android:id="@+id/editText2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_alignParentBottom="true"
android:layout_marginStart="78dp"
android:layout_marginLeft="78dp"
android:layout_marginTop="502dp"
android:layout_marginEnd="120dp"
android:layout_marginRight="120dp"
android:layout_marginBottom="184dp"
android:ems="10"
android:hint="@string/upass"
android:importantForAutofill="no"
android:inputType="textPassword"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.676"/>
<ImageView
android:id="@+id/imageView2"
android:layout_width="43dp"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_alignParentBottom="true"
android:layout_marginStart="163dp"
android:layout_marginLeft="163dp"
android:layout_marginTop="189dp"
android:layout_marginEnd="205dp"
android:layout_marginRight="205dp"
android:layout_marginBottom="495dp"
app:srcCompat="@drawable/circle" />
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_alignParentBottom="true"
android:layout_marginStart="168dp"
android:layout_marginLeft="168dp"
android:layout_marginTop="368dp"
android:layout_marginEnd="208dp"
android:layout_marginRight="208dp"
android:layout_marginBottom="344dp"
android:text="@string/login"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="@+id/angry_btn"
android:layout_width="186dp"
android:layout_height="57dp"
android:layout_alignParentStart="true"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_alignParentBottom="true"
android:layout_marginStart="90dp"
android:layout_marginLeft="90dp"
android:layout_marginTop="589dp"
android:layout_marginEnd="136dp"
android:layout_marginRight="136dp"
android:layout_marginBottom="85dp"
android:background="@drawable/buttonshape"
android:shadowColor="#A8A8A8"
android:shadowDx="0"
android:shadowDy="0"
android:shadowRadius="0"
android:text="@string/login"
android:textColor="#FFFFFF"
android:textSize="23sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.389"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.813" />
</RelativeLayout>
`
3.AndroidManifest:
`
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.ribat.batchcommand18">
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".login">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<action android:name="android.intent.action.VIEW"/>
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<action android:name="android.intent.action.VIEW"/>
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
`
3.Gradle:
apply plugin: 'com.android.application'
apply plugin: 'com.google.gms.google-services'
android {
compileSdkVersion 29
buildToolsVersion "29.0.3"
defaultConfig {
applicationId "com.ribat.batchcommand18"
minSdkVersion 16
targetSdkVersion 29
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'androidx.appcompat:appcompat:1.1.0'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test.ext:junit:1.1.0'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1'
implementation 'com.google.firebase:firebase-analytics:17.2.2'
}
this is my first question in stackoverflow 🙂
Answer
You should check login activity’s xml layout.
login activity’s widgets have improper properties.
For example bottom’s Login Button
<Button
android:id="@+id/angry_btn"
android:layout_width="186dp"
android:layout_height="57dp"
android:layout_alignParentStart="true"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_alignParentBottom="true"
android:layout_marginStart="90dp"
android:layout_marginLeft="90dp"
android:layout_marginTop="589dp"
android:layout_marginEnd="136dp"
android:layout_marginRight="136dp"
android:layout_marginBottom="85dp"
android:background="@drawable/buttonshape"
android:shadowColor="#A8A8A8"
android:shadowDx="0"
android:shadowDy="0"
android:shadowRadius="0"
android:text="@string/login"
android:textColor="#FFFFFF"
android:textSize="23sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.389"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.813" />
- layout_margin is too large for small screen devices.
- In this case layout_alignParent not necessary.
- app:layout_constraint is ConstraintLayout properties, not RelativeLayout.
Try to like this and motify other widgets.
<Button
android:id="@+id/angry_btn"
android:layout_width="186dp"
android:layout_height="57dp"
android:background="#ffff00"
android:shadowColor="#A8A8A8"
android:shadowDx="0"
android:shadowDy="0"
android:shadowRadius="0"
android:text="@string/login"
android:textColor="#FFFFFF"
android:textSize="23sp"
android:layout_centerHorizontal="true"
android:layout_alignParentBottom="true"
android:layout_marginBottom="85dp"
/>