Unable to find explicit activity class Android Eclipse error
android.content.ActivityNotFoundException: Unable to find explicit activity class {com.example.my_package/com.example.my_package.MainClass}; have you declared this activity in your AndroidManifest.xml?
Is MainClass.java in AndroidManifest as a activity ?
AndroidManifest.xml example
Is MainClass.java in AndroidManifest as a activity ?
AndroidManifest.xml example
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="//schemas.android.com/apk/res/android"
package="com.example.my_packag"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="7" />
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".MainClass"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
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Basic shortcuts for Android Emulator.
More about Android Emulator
| Emulated Device Key | Keyboard Key |
|---|---|
| Home | HOME |
| Menu (left softkey) | F2 or Page-up button |
| Star (right softkey) | Shift-F2 or Page Down |
| Back | ESC |
| Call/dial button | F3 |
| Hangup/end call button | F4 |
| Search | F5 |
| Power button | F7 |
| Audio volume up button | KEYPAD_PLUS, Ctrl-5 |
| Audio volume down button | KEYPAD_MINUS, Ctrl-F6 |
| Camera button | Ctrl-KEYPAD_5, Ctrl-F3 |
| Switch to previous layout orientation (for example, portrait, landscape) | KEYPAD_7, Ctrl-F11 |
| Switch to next layout orientation (for example, portrait, landscape) | KEYPAD_9, Ctrl-F12 |
| Toggle cell networking on/off | F8 |
| Toggle code profiling | F9 (only with -trace startup option) |
| Toggle fullscreen mode | Alt-Enter |
| Toggle trackball mode | F6 |
| Enter trackball mode temporarily (while key is pressed) | Delete |
| DPad left/up/right/down | KEYPAD_4/8/6/2 |
| DPad center click | KEYPAD_5 |
| Onion alpha increase/decrease | KEYPAD_MULTIPLY(*) / KEYPAD_DIVIDE(/) |
More about Android Emulator
String[] sAr = new String[] {"one","two","three"};
List<String> wordList = Arrays.asList(sAr);
Collections.shuffle( wordList);
String[]myShuffledArray = wordList.toArray(new String[wordList.size()]);
// start_dark.png is stored in path /package_name/res/drawable/start_dark.png
Drawable dw = getApplicationContext().getResources().getDrawable(R.drawable.start_dark);
Button hButtonStart = (Button)findViewById(R.id.buttonStart);
hButtonStart.setCompoundDrawablesWithIntrinsicBounds(dw, null, null, null);
On Android device is path to *.apk like this example:
How get package *.apk path on device dynamically Android example
/data/app/cz.okhelp.my_package.apkHow get package *.apk path on device dynamically Android example
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
String sPackagePath = getPackageResourcePath();
}
If you try function for checking internet connection you can disable internet on the emulator:
Settings - Wireless and networks - Mobile networks - Data enabled (checked - unchecked )
Settings - Wireless and networks - Mobile networks - Data enabled (checked - unchecked )
public boolean isNetworkAvailable() {
ConnectivityManager cm = (ConnectivityManager)
getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = cm.getActiveNetworkInfo();
if (networkInfo != null && networkInfo.isConnected()) {
return true;
}
return false;
}