Change background color dynamically View TableRow setBackgroundColor Android example
How change background color of View Android sample.
MainActivity.java
main.xml
MainActivity.java
public class MainActivity extends Activity {
TextView hTextView;
TableRow hTableRow;
Button hButton, hButtonStop;
private Handler mHandler = new Handler();
private int nCounter = 0;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
hTextView = (TextView)findViewById(R.id.idTextView);
hButton = (Button)findViewById(R.id.idButton);
hButton.setOnClickListener(mButtonStartListener);
hTableRow = (TableRow)findViewById(R.id.idTableRow1);
} // end onCreate
View.OnClickListener mButtonStartListener = new OnClickListener() {
public void onClick(View v) {
hTableRow.setBackgroundColor(Color.YELLOW);
}
};
}
main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="//schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TableLayout android:layout_height="wrap_content" android:layout_width="fill_parent" android:id="@+id/tableLayout1">
<TableRow android:id="@+id/idTableRow1"
android:layout_width="wrap_content"
android:layout_height="wrap_content" android:background="#5655AA">
<TextView
android:id="@+id/idTextView"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
</TableRow>
</TableLayout>
</LinearLayout>
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Další témata ....(Topics)
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- 14
// error
- "18"
// ok
Activity.java
\res\layout\main.xml
location TouchImageView\src\cz\okhelp\TouchImageView\TouchImageView.java
public class A extends Activity{
Bitmap bm;
TouchImageView touch;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
bm = BitmapFactory.decodeResource(getResources(), R.drawable.chinese_sky_map);
touch = (TouchImageView)findViewById(R.id.myImageView);
touch.setImageBitmap(bm);
}
}
\res\layout\main.xml
<?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:orientation="vertical" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello" />
<cz.okhelp.TouchImageView.TouchImageView
android:id="@+id/myImageView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
/>
</LinearLayout>
location TouchImageView\src\cz\okhelp\TouchImageView\TouchImageView.java
public class TouchImageView extends ImageView {
Context context;
// constructor wihtout using *.xml file
// public TouchImageView(Context context) {
// super(context);
// }
// constructor with xml file
public TouchImageView(Context context, AttributeSet attrs)
{
super(context, attrs);
super.setClickable(true);
this.context = context;
}
}
If Android emulator freezes at startup, try create new virtual device with smaller memory and cpu usage, or select older version of Android, or buy new pc with higher performance.

- open AVD MANAGER
- press Create Virtual Device
- select Device with small memory usage (e.g. 480x800 of resolution) - Next
- check - Show downloadable ....
- Download - lower version of system Android, select, press - Next
- check data, Show Advanced Settings, check Use host... and press Finish

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.

android:background="@android:color/transparent"
<LinearLayout
android:baselineAligned="false"
android:background="@android:color/transparent"
android:id="@+id/linearLayout1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
>
<LinearLayout>
////////////////////////////
LinearLayout mLinearLayout1 = (LinearLayout)findViewById(R.id.linearLayout1);
mLinearLayout1.setBackgroundColor(Color.TRANSPARENT);
Editace: 2011-09-27 08:07:09
Počet článků v kategorii: 396
Url:change-background-color-dynamically-view-tablerow-android-example