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Landscape painting

I searched this site for an answer, but I can not find it. my Android application does not switch from portrait to landscape in my emulator, it just shows a side portrait screen. I created a layout and a folder with layouts with the corresponding xml names, etc. but it doesn't seem to fit the layout versions. I don't have an onConfig () function or anything else, so I was wondering if anyone could help?

mainpage.xml layout earth

<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="@color/main_background" android:gravity="center" android:padding="30dip"> <TextView android:id="@+id/main_title_text" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/main_title" android:textColor="@color/text" android:textSize="25sp" /> <TableLayout android:id="@+id/tablelayout1" android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center" android:stretchColumns="*"> <TableRow android:layout_height="wrap_content" android:layout_width="fill_parent"> <Button android:id="@+id/start_button" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/start_button" android:textColor="@color/text" /> <Button android:id="@+id/help_button" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/help_button" android:textColor="@color/text" /> </TableRow> <TableRow android:layout_height="wrap_content" android:layout_width="match_parent"> <Button android:id="@+id/extra_button" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/extra_button" android:textColor="@color/text" /> <Button android:id="@+id/stop_button" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/stop_button" android:textColor="@color/text" /> </TableRow> </TableLayout> </LinearLayout>

Markup

 <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="@color/main_background" android:gravity="center" android:padding="30dip"> <TextView android:id="@+id/main_title_text" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/main_title" android:textColor="@color/text" android:textSize="25sp" /> <Button android:id="@+id/start_button" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/start_button" android:textColor="@color/text" /> <Button android:id="@+id/help_button" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/help_button" android:textColor="@color/text" /> <Button android:id="@+id/extra_button" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/extra_button" android:textColor="@color/text" /> <Button android:id="@+id/stop_button" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/stop_button" android:textColor="@color/text" /> </LinearLayout>

manifest

 <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.MC.ChemPal" android:versionCode="1" android:versionName="1.0"> <uses-sdk android:minSdkVersion="10" /> <application android:icon="@drawable/icon" android:label="@string/app_name"> <activity android:name=".main" android:label="@string/app_name"> <intent-filter> <action android:name="com.MC.ChemPal.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <activity android:name=".mainpage" android:label="@string/app_name"> <intent-filter> <action android:name="com.MC.ChemPal.MAINPAGE" /> <category android:name="android.intent.category.DEFAULT" /> </intent-filter> </activity> <activity android:name=".Extra" android:label="@string/app_name"> <intent-filter> <action android:name="com.MC.ChemPal.EXTRA" /> <category android:name="android.intent.category.DEFAULT" /> </intent-filter> </activity> <activity android:name=".help" android:label="@string/app_name"> <intent-filter> <action android:name="com.MC.ChemPal.HELP" /> <category android:name="android.intent.category.DEFAULT" /> </intent-filter> </activity> <activity android:name=".search_page" android:label="@string/app_name"> <intent-filter> <action android:name="com.MC.ChemPal.SEARCH_PAGE" /> <category android:name="android.intent.category.DEFAULT" /> </intent-filter> </activity> </application> </manifest>

Java

 package com.MC.ChemPal; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.TextView; public class mainpage extends Activity { /** Called when the activity is first created. */ Button start_button, help_button, extra_button, stop_button; TextView display; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.mainpage); start_button = (Button) findViewById(R.id.start_button); help_button = (Button) findViewById(R.id.help_button); extra_button = (Button) findViewById(R.id.extra_button); stop_button= (Button) findViewById(R.id.stop_button); display = (TextView) findViewById(R.id.main_title_text); start_button.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { // TODO Auto-generated method stub Intent openSearchPage = new Intent("com.MC.ChemPal.SEARCH_PAGE"); startActivity(openSearchPage); } }); help_button.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { // TODO Auto-generated method stub Intent openHelp = new Intent("com.MC.ChemPal.HELP"); startActivity(openHelp); } }); extra_button.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { // TODO Auto-generated method stub Intent openExtra = new Intent("com.MC.ChemPal.EXTRA"); startActivity(openExtra); } }); stop_button.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { // TODO Auto-generated method stub onStop(); } }); } }
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2 answers

This is an emulator error, when you try to start your activity in landscape mode, you will see that it will load mainpage.xml from the earth’s layout,

Android: screenOrientation = "landscape"

but ctrl + f12 does not work, this is an error

http://code.google.com/p/android/issues/detail?id=13189

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Please refer to this link . Hope this helps you resolve all your doubts.

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Source: https://habr.com/ru/post/1447705/

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