Expected resource of type raw drawable
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Try insert + before R.drawable.xxxx
// error
InputStream is = context.getResources().openRawResource(R.drawable.app_sample_code);
// ok
InputStream is = context.getResources().openRawResource(+R.drawable.app_sample_code);
397LW NO topic_id
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Další témata ....(Topics)
How start certain Activity if user clicked to ListView item
Start Activity from list – launches other activities from list - latest variant!!!!
Game class Game.java game.xml
You have to add class Game to AndroidManifest.xml
Start Activity from list – launches other activities from list - latest variant!!!!
public class Main extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
try {
setContentView(R.layout.main);
ListView mlistView = (ListView) findViewById(R.id.idListView);
mlistView.setAdapter(new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1,
new String[] {"Game", "Help", "Home site"}));
mlistView.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// When clicked, show a toast with the TextView text Game, Help, Home
Toast.makeText(getApplicationContext(), ((TextView) view).getText(),
Toast.LENGTH_SHORT).show();
String sText = ((TextView) view).getText().toString();
Intent intent = null;
if(sText.equals("Game"))
intent = new Intent(getBaseContext(),
Game.class);
//else if(sText.equals("Help")) ..........
if(intent != null)
startActivity(intent);
}
});
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
Game class Game.java game.xml
You have to add class Game to AndroidManifest.xml
<activity android:name=".Game" android:label="GameLabel">
</activity>
package cz.okhelp.listview;
import android.app.Activity;
import android.os.Bundle;
public class Game extends Activity{
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// you have to create game.xml
setContentView(R.layout.game);
}
}
public static Bitmap createBitmap (int[] colors, int offset, int stride, int width, int height, Bitmap.Config config)
public void drawBitmap (Bitmap bitmap, float left, float top, Paint paint)
public void drawBitmap (Bitmap bitmap, float left, float top, Paint paint)
// //www.apache.org/licenses/LICENSE-2.0
public class MainActivity extends Activity {
private static final int WIDTH = 50;
private static final int HEIGHT = 50;
private static final int STRIDE = 64; // must be >= WIDTH
private static int[] createColors() {
int[] colors = new int[STRIDE * HEIGHT];
for (int y = 0; y < HEIGHT; y++) {
for (int x = 0; x < WIDTH; x++) {
int r = x * 255 / (WIDTH - 1);
int g = y * 255 / (HEIGHT - 1);
int b = 255 - Math.min(r, g);
int a = Math.max(r, g);
colors[y * STRIDE + x] = (a << 24) | (r << 16) | (g << 8) | b;
}
}
return colors;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(new SampleView(this));
}
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.GREEN);
int[] mColors = createColors();
int[] colors = mColors;
Bitmap bitmap = Bitmap.createBitmap(colors, 0, STRIDE, WIDTH, HEIGHT,
Bitmap.Config.RGB_565);
canvas.drawBitmap(bitmap, 50,20, paint);
}
}
}
First: AdView is in XML file
Second: Using AdView in Fragment with LinearLayout
Resolve error in ADT Graphical layout editor:
The following classes could not be instantiated:
- com.google.android.gms.ads.AdView
More about:
https://developers.google.com/mobile-ads-sdk/docs/admob/android/play-migration?hl=it
<com.google.android.gms.ads.AdView
xmlns:ads="//schemas.android.com/apk/res-auto"
android:id="@+id/adView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
ads:adUnitId="MY_AD_UNIT_ID"
ads:adSize="BANNER"/>
// onResume
AdView adView = (AdView)this.findViewById(R.id.adView);
AdRequest adRequest = new AdRequest.Builder()
.addTestDevice(AdRequest.DEVICE_ID_EMULATOR)
.addTestDevice("TEST_DEVICE_ID")
.build();
adView.loadAd(adRequest);
Second: Using AdView in Fragment with LinearLayout
Resolve error in ADT Graphical layout editor:
The following classes could not be instantiated:
- com.google.android.gms.ads.AdView
// layout in xml file
<LinearLayout
android:id="@+id/layout"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
// java class with fragment in Fragment class or in Activity class
private static AdView adView;
@Override
public void onResume(){
super.onResume();
try {
// in xml is empty layout
adView = new AdView(getActivity());
adView.setAdUnitId("ca-app-pub-626/638103xxxxxxx");
adView.setAdSize(AdSize.BANNER);
LinearLayout layout = (LinearLayout)getView() .findViewById(R.id.layout);
layout.addView(adView);
AdRequest adRequest = new AdRequest.Builder().build();
adView.loadAd(adRequest);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
More about:
https://developers.google.com/mobile-ads-sdk/docs/admob/android/play-migration?hl=it
Sensor, getSystemService(), getSensorList(), getDefaultDisplay(), WindowManager,
Surface.ROTATION_0, onAccuracyChanged() Android sample.
Surface.ROTATION_0, onAccuracyChanged() Android sample.
public class _MotionActivity extends Activity implements SensorEventListener {
private float mSensorX;
private float mSensorY;
private Display mDisplay;
private SensorManager sm;
private PowerManager mPowerManager;
private WindowManager mWindowManager;
TextView textview;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Get an instance of the SensorManager
sm = (SensorManager) getSystemService(SENSOR_SERVICE);
if(sm.getSensorList(Sensor.TYPE_ACCELEROMETER).size()!=0){
Sensor s = sm.getSensorList(Sensor.TYPE_ACCELEROMETER).get(0);
sm.registerListener(this,s, SensorManager.SENSOR_DELAY_NORMAL);
}
// Get an instance of the PowerManager
mPowerManager = (PowerManager) getSystemService(POWER_SERVICE);
// Get an instance of the WindowManager
mWindowManager = (WindowManager) getSystemService(WINDOW_SERVICE);
mDisplay = mWindowManager.getDefaultDisplay();
setContentView(R.layout.main);
textview = (TextView)findViewById(R.id.textView1);
}
@Override
public void onSensorChanged(SensorEvent event) {
if (event.sensor.getType() != Sensor.TYPE_ACCELEROMETER)
return;
switch (mDisplay.getRotation()) {
case Surface.ROTATION_0:
mSensorX = event.values[0];
mSensorY = event.values[1];
textview.setText(String.valueOf( mSensorX));
break;
case Surface.ROTATION_90:
mSensorX = -event.values[1];
mSensorY = event.values[0];
textview.setText(String.valueOf( mSensorX));
break;
case Surface.ROTATION_180:
mSensorX = -event.values[0];
mSensorY = -event.values[1];
textview.setText(String.valueOf( mSensorX));
break;
case Surface.ROTATION_270:
mSensorX = event.values[1];
mSensorY = -event.values[0];
textview.setText(String.valueOf( mSensorX));
break;
}
}
@Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
// TODO Auto-generated method stub
}
@Override
protected void onResume() {
super.onResume();
if(sm.getSensorList(Sensor.TYPE_ACCELEROMETER).size()!=0){
Sensor s = sm.getSensorList(Sensor.TYPE_ACCELEROMETER).get(0);
sm.registerListener(this,s, SensorManager.SENSOR_DELAY_NORMAL);
}
}
@Override
protected void onPause() {
sm.unregisterListener(this);
super.onStop();
}
}
How add pair of strings to Hashtable, how get pair key value from Hashtable, how split string, basic Java Android example.
MainClass.java
MainClass.java
import java.util.Enumeration;
import java.util.Hashtable;
public class MainClass {
public static void main(String[] arg) {
// english;germany dictionary
String[] arrayOfString = { "one;eine", "two;zwei", "three;drei" };
Hashtable<String, String> hashTable = new Hashtable<String, String>();
for(String s: arrayOfString){
String[] array = s.split(";");
String sKey ="", sValue="";
if(array.length > 1){
sKey = array[0]; sValue = array[1];
hashTable.put(sKey, sValue);
}
}
Enumeration<String> enumer = hashTable.keys();
while (enumer.hasMoreElements()) {
String keyFromTable = (String) enumer.nextElement();
// get Returns the value to which the specified key is mapped,
// or null if this map contains no mapping for the key
System.out.println(keyFromTable + " = " + hashTable.get(keyFromTable));
}
}
}
/*
two = zwei
one = eine
three = drei
*/
Editace: 2017-04-15 09:49:26
Počet článků v kategorii: 397
Url:expected-resource-of-type-raw-drawable
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