How to programmatically set the button style - Android
How set rounded corners and own styles ActivityMy.java
\res\drawable\back_button_answer.xml
Button btn.setBackgroundResource(R.drawable.back_button_answer);
\res\drawable\back_button_answer.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="//schemas.android.com/apk/res/android" android:shape="rectangle" >
<corners android:radius="10dip" />
<!-- background -->
<gradient
android:startColor="#D6D7D6"
android:centerColor="#E2E2E2"
android:centerY="0.75"
android:endColor="#D6D7D6"
android:angle="270"
/>
<stroke android:width="2dip" android:color="#fff"/>
</shape>
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If you want download some *.apk file from internet and try on your emulator you get error than you have to install SD card. You have to closing Android emulator.
Mount Android emulator SD card instruction
Image how install SD card on Android emulator in Eclipse.
Mount Android emulator SD card instruction
- In Eclipse go in menu Window - Android SDK and Avg Manager
- Select Virtual devices
- Select AVD Name where you need install SD card
- Click on Edit button
- In open dialog go to SD card - Size: and write 500
- Press button Edit AVD
- Run AVD emulator
Image how install SD card on Android emulator in Eclipse.

Try this code with CursorLoader:
Uri uri = getIntent().getData();
// DEPRECATED
Cursor cursor = managedQuery(uri, null, null, null, null);
// WORKING - loadInBackground() preventing freezing of app
Cursor cursor = new CursorLoader(getApplicationContext(),uri, null, null, null, null).loadInBackground();
TypeFace, setTypeface, font, font family, array of String, Button create dynamically
@Override
protected void onStart() {
LinearLayout.LayoutParams p = new LinearLayout.LayoutParams(
48,
55
);
Typeface typeFace = Typeface.MONOSPACE;
String [] ar = {"A","B","C","D","E","F","G","H","J","K"};
for (int i = 0; i < ar.length; i++) {
Button buttonView = new Button(this);
buttonView.setText(Html.fromHtml("<b>"+ar[i]+"</b>"));
buttonView.setTextColor(Color.BLUE);
buttonView.setTextSize(27.f);
buttonView.setTypeface(typeFace,Typeface.BOLD);
buttonView.setOnClickListener(mThisButtonListener);
if(i%2==0)
mLayoutButtons.addView(buttonView, p);
else
mLayoutButtonsNextRow.addView(buttonView, p);
_listOfButtons.add(buttonView);
}
super.onStart();
}
//////// xml file
<TextView
android:id="@+id/text01"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="20dp"
android:fontFamily="Arial"
/>
HorizontalScrollView ScrollView LinearLayout horizontal vertical Android xml basic example and image.
[caption id="attachment_889" align="alignleft" width="200" caption="horizontal scrollview horizontalscrollview android"]
[/caption]
Other sample
[caption id="attachment_889" align="alignleft" width="200" caption="horizontal scrollview horizontalscrollview android"]

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout android:id="@+id/LinearLayout01"
android:layout_width="fill_parent" android:layout_height="fill_parent"
xmlns:android="//schemas.android.com/apk/res/android">
// horizontal and vertical Scrollview
<ScrollView android:id="@+id/ScrollView01"
android:layout_height="135px" android:layout_width="wrap_content"
android:scrollbars="horizontal|vertical">
// HorizontalScrollview
<HorizontalScrollView android:id="@+id/HorizontalScrollView01"
android:layout_height="fill_parent" android:layout_width="wrap_content">
<LinearLayout android:id="@+id/LinearLayout02"
android:layout_width="wrap_content" android:orientation="vertical"
android:layout_height="fill_parent">
<LinearLayout android:orientation="horizontal"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:layout_weight="1">
<TextView android:text="red" android:gravity="center_horizontal"
android:background="#aa0000" android:layout_width="200px"
android:layout_height="fill_parent" android:layout_weight="1" />
<TextView android:text="green" android:gravity="center_horizontal"
android:background="#00aa00" android:layout_width="200px"
android:layout_height="fill_parent" android:layout_weight="1" />
<TextView android:text="blue" android:gravity="center_horizontal"
android:background="#0000aa" android:layout_width="200px"
android:layout_height="fill_parent" android:layout_weight="1" />
<TextView android:text="yellow" android:gravity="center_horizontal"
android:background="#aaaa00" android:layout_width="200px"
android:layout_height="fill_parent" android:layout_weight="1" />
</LinearLayout>
<LinearLayout android:orientation="vertical"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:layout_weight="1">
<TextView android:text="row one" android:textSize="15pt"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:layout_weight="1" />
<TextView android:text="row two" android:textSize="15pt"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:layout_weight="1" />
<TextView android:text="row three" android:textSize="15pt"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:layout_weight="1" />
<TextView android:text="row four" android:textSize="15pt"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:layout_weight="1" />
</LinearLayout>
</LinearLayout>
</HorizontalScrollView>
</ScrollView>
</LinearLayout>
Other sample
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="//schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="@+id/layout"
android:orientation="vertical" >
<HorizontalScrollView
android:id="@+id/horizontalScrollView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<LinearLayout
android:id="@+id/linearLayout1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Hello world! First TextView" />
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Large Text"
android:textAppearance="?android:attr/textAppearanceLarge" />
<TextView
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Medium Text"
android:textAppearance="?android:attr/textAppearanceMedium" />
</LinearLayout>
</HorizontalScrollView>
</LinearLayout>
Screen Android example source code for developers.
Get orientation of screen.
Get orientation of screen.
public int getScreenOrientation() {
if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) {
return 1; // Portrait Mode
}else if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE) {
return 2; // Landscape mode
}
return 0;
}
Editace: 2012-07-25 20:54:27
Počet článků v kategorii: 396
Url:how-to-programmatically-set-the-button-style-android