Zipalign ADT Eclipse
Zipalign.exe path on Windows:
c:\Program Files\Android\android-sdk-windows\tools\zipalign.exe
How do signs .apk with your private key - image:
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c:\Program Files\Android\android-sdk-windows\tools\zipalign.exe
zipalign [-f] [-v] <alignment> infile.apk outfile.apk
// command line in Total Commander
zipalign.exe -f -v 4 infile.apk outfile.apk
When using Eclipse with the ADT plugin, the Export Wizard will automatically zipalign your .apk after it signs it with your private key.
How do signs .apk with your private key - image:





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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

drawRect(), Paint, setStroke(), setStyle(), Canvas example source code.
@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) {
canvas.drawColor(Color.CYAN);
Paint p = new Paint();
// smooths
p.setAntiAlias(true);
p.setColor(Color.RED);
p.setStyle(Paint.Style.STROKE);
p.setStrokeWidth(4.5f);
// opacity
//p.setAlpha(0x80); //
//drawRect (float left, float top, float right, float bottom, Paint paint)
canvas.drawRect(10, 10, 30, 30, p);
}
}
}
Spinner _spin1 = (Spinner) findViewById(R.id.spinLangFirst);
ArrayAdapter<String> adapterJazyky = new ArrayAdapter<String>(this,
R.layout.spinner_text_layout.xml, {"one","two","etc...."});
adapterJazyky.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
_spin1.setAdapter(adapterJazyky);
spinner_text_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="//schemas.android.com/apk/res/android"
android:id="@+id/spinnerText"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textSize="20sp"
/>
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
Difference between "@+id/” and "@id/” in Android
android:id="@+id/xxx" unique identifier of view
@id/ a reference to the unique identifier
android:id="@+id/xxx" unique identifier of view
@id/ a reference to the unique identifier
<TextView
android:id="@+id/first_element_id"
.........
/>
<TextView
android:id="@+id/second_element_id"
android:layout_below="@id/first_element_id"
..........
/>
Editace: 2014-02-15 20:32:18
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Url:zipalign-adt-eclipse