Start Activity from list - launches other activities from list
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Activities launcher
public class MainActivity extends ListActivity {
private class Sample {
private CharSequence title;
private Class<? extends Activity> activityClass;
public Sample(int titleResId, Class<? extends Activity> activityClass) {
this.activityClass = activityClass;
this.title = getResources().getString(titleResId);
}
@Override
public String toString() {
return title.toString();
}
}
private static Sample[] mSamples;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Instantiate the list of samples.
mSamples = new Sample[]{
new Sample(R.string.title_first_app, FirstActivity.class),
new Sample(R.string.title_second_app, SecondActivity.class),
new Sample(R.string.title_third_app, ThirdActivity.class),
};
setListAdapter(new ArrayAdapter<Sample>(this,
android.R.layout.simple_list_item_1,
android.R.id.text1,
mSamples));
}
@Override
protected void onListItemClick(ListView listView, View view, int position, long id) {
// Launch the sample associated with this list position.
startActivity(new Intent(MainActivity.this, mSamples[position].activityClass));
}
}
397LW NO topic_id
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Další témata ....(Topics)
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(new SampleView(this));
}
private static Bitmap codec(Bitmap src, Bitmap.CompressFormat format,
int quality) {
ByteArrayOutputStream os = new ByteArrayOutputStream();
src.compress(format, quality, os);
byte[] array = os.toByteArray();
return BitmapFactory.decodeByteArray(array, 0, array.length);
}
private static class SampleView extends View {
// CONSTRUCTOR
public SampleView(Context context) {
super(context);
setFocusable(true);
}
@Override
protected void onDraw(Canvas canvas) {
Paint paint = new Paint();
canvas.drawColor(Color.YELLOW);
Bitmap bmp = BitmapFactory.decodeResource(getResources(), R.drawable.flower_blue);
Bitmap bPNGcompress = codec(bmp, Bitmap.CompressFormat.PNG, 0);
int h = bmp.getHeight();
canvas.drawBitmap(bmp, 10,10, paint);
canvas.drawBitmap(bPNGcompress, 10,10 + h + 10, paint);
}
}
}
Read file from URL to array of byte and convert to UTF-8 String Android examle source code.
URL urlLoc = new URL("//myweb.com/myfile.html");
URLConnection conexion = urlLoc.openConnection();
conexion.setConnectTimeout(4000);
conexion.setReadTimeout(1000);
conexion.connect();
// downlod the file
InputStream input = new BufferedInputStream(urlLoc
.openStream());
StringBuffer responseBuffer = new StringBuffer();
byte[] byteArray = new byte[1024];
while (input.read(byteArray) != -1)
{
String res = new String(byteArray, "UTF-8");
responseBuffer.append(res);
byteArray = null;
byteArray = new byte[1024];
}
String response = responseBuffer.toString().trim();
R.string to string Android source code
R.array to string [] Android source code
R.array to string [] Android source code
String s = getResources().getString(R.string.my_string); // Hello world!!
String[] arrayOfStrings = getResources().getStringArray(R.array.my_array); // one, two
<xml version="1.0" encoding="utf-8">
<resources>
<string-array name="my_array">
<item>one</item>
<item>two</item>
</string-array>
<string name="my_string">Hello world!!</string>
</resources>
No executable code found at line ....
Try one from this solution:
1.) uninstall app from test device, try to debugg app
or
2.) open module gradle file and set minifyEnabled to false in debug condition
Try one from this solution:
1.) uninstall app from test device, try to debugg app
or
2.) open module gradle file and set minifyEnabled to false in debug condition
debug {
minifyEnabled false
}
How get Android SDK location - PATH on PC from Eclipse tutorial.
- Open dialog from menu Window -> AVD and SDK manager
- In dialog select Available packages
- On top of dialog will displayed similar path: SKD Location: C:\PROGRA~1\Android\android-sdk-windows\
Editace: 2016-02-25 19:32:45
Počet článků v kategorii: 397
Url:start-activity-from-list-launches-other-activities-from-list
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