Unable to find explicit activity class Android Eclipse error
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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>
397LW NO topic_id
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Další témata ....(Topics)
You can use for, do while, while cycle for example:
public void myFunction(){
for (int i = 0; i < 1; i++) {
// some code
int c = 10;
if(c==10)
break; // goto stop; in C++
} // end of for
// stop: // break moved process to end of for
// next code
}
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>
Integer, Float, String, List passed as reference in JAVA example source code:
// List passed as reference JAVA
List<Integer>list = new ArrayList<Integer>();
public void fc (List<Integer>listRef){
listRef.add(7);
listRef.add(5);
}
fc(list); // 7, 5
// String passed as reference JAVA
public void mutate(AtomicReference<Object> ref) { ref.set("Goodbye"); }
AtomicReference<Object> ref = new AtomicReference<Object>("Hello");
mutate(ref);
System.out.println(ref.get()); //Goodbye!
String s = (String) ref.get();
// Integer passed as reference JAVA
private static void mutate(AtomicReference<Object> ref) { ref.set(7); }
//public static void main(String[] arg) {
AtomicReference<Object> ref = new AtomicReference<Object>(5);
mutate(ref);
System.out.println(ref.get()); // 7
int n = (Integer) ref.get();
// Float passed as reference JAVA
private static void mutate(AtomicReference<Object> ref) { ref.set(14.8f); }
//public static void main(String[] arg) {
AtomicReference<Object> ref = new AtomicReference<Object>(12.1f);
mutate(ref);
float f = (Float) ref.get();
System.out.println(f); //14.8
Use this code for example in some method or function
// public Object getSystemService (String name)
// Return the handle to a system-level service by name.
// The class of the returned object varies by the requested name.
InputMethodManager inputMethodManager = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
//public boolean hideSoftInputFromWindow (IBinder windowToken, int flags)
//EditText myEdit = (EditText)findViewById(R.id.idEditText);
inputMethodManager .hideSoftInputFromWindow(myEdit.getWindowToken(), 0);
android:gravity="left|center_vertical" or android:gravity="right|center_vertical"
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="left|center_vertical"
android:paddingLeft="20dp"
android:text="My Button"
/>
Editace: 2014-02-15 20:46:01
Počet článků v kategorii: 397
Url:unable-to-find-explicit-activity-class-android-eclipse-error
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