Draw Rect Android basic example
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);
}
}
}
396LW NO topic_id
AD
Další témata ....(Topics)
do while Java example
public class MainClass {
public static void main(String[] arg) {
String[] arrayOfString = { "Hello", "people", "hello", "world!" };
int i = 0;
// first cycle is always executed
do {
System.out.println("Loop: " + i);
System.out.println(arrayOfString[i]);
i++;
}while ( i == -1 );
}
}
/*
Loop: 0
Hello
*/
public class MainClass {
public static void main(String[] arg) {
String[] arrayOfString = { "Hello", "people", "hello", "world!" };
int i = 0;
do {
System.out.println("Loop: " + i);
System.out.println(arrayOfString[i]);
i++;
}while ( i < arrayOfString.length );
}
}
/*
Loop: 0
Hello
Loop: 1
people
Loop: 2
hello
Loop: 3
world!
*/
Warning in AndroidManifest.xml:
tag should specify a target API level (the highest verified version; when running on
later versions, compatibility behaviors may be enabled) with android:targetSdkVersion="?"
Solution:
later versions, compatibility behaviors may be enabled) with android:targetSdkVersion="?"
Solution:
<uses-sdk android:minSdkVersion="4"
android:targetSdkVersion="16" />
Delete - unistal app from testing device - emulator and try again RUN - DEBUGG your app.
I tried this Eclipse and work fine:
Eclipse Classic
//www.filehippo.com/download_eclipse_classic_32/
Eclipse Juno
Eclipse Helios
//developer.android.com/tools/sdk/eclipse-adt.html
Eclipse Classic
//www.filehippo.com/download_eclipse_classic_32/
Eclipse Juno
Eclipse Helios
//developer.android.com/tools/sdk/eclipse-adt.html
Wiktionary - SDK samples Android
about.xml
protected void showAbout() {
// Inflate the about message contents
View messageView = getLayoutInflater().inflate(R.layout.about, null, false);
// When linking text, force to always use default color. This works
// around a pressed color state bug.
TextView textView = (TextView) messageView.findViewById(R.id.about_credits);
int defaultColor = textView.getTextColors().getDefaultColor();
textView.setTextColor(defaultColor);
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setIcon(R.drawable.app_icon);
builder.setTitle(R.string.app_name);
builder.setView(messageView);
builder.create();
builder.show();
}

about.xml
<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (C) 2009 The Android Open Source Project
//www.apache.org/licenses/LICENSE-2.0
-->
<LinearLayout xmlns:android="//schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:padding="20dip">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="16sp"
android:text="@string/app_descrip"
android:textColor="?android:attr/textColorPrimaryInverse" />
<TextView
android:id="@+id/about_credits"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="20dip"
android:textSize="16sp"
android:text="@string/app_credits"
android:autoLink="web"
android:textColor="?android:attr/textColorPrimaryInverse" />
</LinearLayout>
Editace: 2013-12-09 13:11:19
Počet článků v kategorii: 396
Url:draw-rect-android-basic-example