Draw color line set stroke width Android basic example
Canvas, drawLine(), setStrokeWidth(), Paint, setAntiAlias(boolean), onDraw()
public class MainActivity extends Activity {
@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.YELLOW);
Paint p = new Paint();
// smooths
p.setAntiAlias(true);
p.setColor(Color.RED);
p.setStrokeWidth(4.5f);
// opacity
p.setAlpha(0x80); //
// drawLine (float startX, float startY, float stopX, float stopY,
// Paint paint)
canvas.drawLine(0, 0, 40, 40, p);
canvas.drawLine(40, 0, 0, 40, p);
}
}
}
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Example source code for Android developers how create array of strings in *.xml file.
You can using array of strings in Spinner ( combobox - dropdown list ) or ListView etc.
You can using array of strings in Spinner ( combobox - dropdown list ) or ListView etc.
<resources>
<string-array name="colors">
<item>red</item>
<item>orange</item>
<item>yellow</item>
<item>green</item>
<item>blue</item>
</string-array>
</resources>
Check if in drawable folder have two picture with same name and delete one.
For example:
Check the module build folder in Android Studio for two files with same names.
For example:
image_1.jpg
image_1.png
Check the module build folder in Android Studio for two files with same names.
C:\Users\myFolder\AndroidStudioProjects\Project\yourModule\build\intermediates\res\merged\debug\drawable\
If you using GoogleAdMobAdsSdk-4.0.4.jar in your project and set android:targetSdkVersion="17" in AndroidManifest.xml , ads will not visible on emulator with Android 4.0.3 or 4.1.
You have to set as android:targetSdkVersion="17"
Update project.properties file - row with target to 17:
You have to set as android:targetSdkVersion="17"
<uses-sdk android:minSdkVersion="4"
android:targetSdkVersion="17" />
Update project.properties file - row with target to 17:
# Project target.
target=android-17
Solution:
public void alertMy(String sTitle, String sMessage){
AlertDialog.Builder builder = new AlertDialog.Builder(Test.this); // activity
builder.setTitle(sTitle)
.setMessage(sMessage)
.setCancelable(false)
.setNegativeButton("Close",new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
AlertDialog alert = builder.create();
alert.show();
}
In your project AndroidManifest.xml you can set permission of Android application example source code.
For example if you want allow your application connection to INTERNET you have to permit this in AndroidManifest.xml.
WebViev show error: Website Not Available you have to permit INTERNET
For example if you want allow your application connection to INTERNET you have to permit this in AndroidManifest.xml.
WebViev show error: Website Not Available you have to permit INTERNET
<uses-permission
android:name="android.permission.INTERNET" />
<uses-permission
android:name="android.permission.GET_ACCOUNTS" />
<uses-permission
android:name="android.permission.USE_CREDENTIALS" />
<uses-permission
android:name="android.permission.MANAGE_ACCOUNTS" />
<uses-permission
android:name="android.permission.AUTHENTICATE_ACCOUNTS" />
<uses-permission
android:name="android.permission.WRITE_SETTINGS" />
<uses-permission
android:name="android.permission.WRITE_SECURE_SETTINGS" />
<uses-permission
android:name="android.permission.READ_CONTACTS" />
<uses-permission
android:name="android.permission.WRITE_CONTACTS" />
<uses-permission
android:name="android.permission.READ_SYNC_STATS" />
<uses-permission
android:name="android.permission.READ_SYNC_SETTINGS" />
<uses-permission
android:name="android.permission.WRITE_SYNC_SETTINGS" />
Editace: 2013-12-09 13:11:39
Počet článků v kategorii: 396
Url:draw-line-android-basic-example
