Delete Canvas - Fill Canvas Android example

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Fill the entire canvas with the specified color.


@Override
    public void onDraw(Canvas canvas) {
    canvas.drawColor(Color.GREEN);
}

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353

Android Fragment onAttach deprecated | android-fragment-onattach-deprecated


// Context instead Activity as a parameter
@Override
public void onAttach(Context context) {
    super.onAttach(context);

    Activity a;

    if (context instanceof Activity){
        a=(Activity) context;
    }

}


OnNoteClickedListener listener;
/* old emxample of usage
	@Override
	public void onAttach(Activity activity) {
		super.onAttach(activity);
		try {
			listener = (OnNoteClickedListener) activity;
		} catch (ClassCastException e) {
			throw new ClassCastException(activity.toString()
					+ " must implement OnNoteClickedListener");
		}
	}
*/
// new version of code
	@Override
	public void onAttach(Context context) {
		super.onAttach(context);

		Activity a;

		if (context instanceof Activity){
			a=(Activity) context;
			try {
				listener = (OnNoteClickedListener) a;
			} catch (ClassCastException e) {
				throw new ClassCastException(a.toString()
						+ " must implement OnNoteClickedListener");
			}
		}

	}

How quickly restart adb.exe ADB server Android emulator example | how-quickly-restart-adb-exe-adb-server-android-emulator-example

Create file restartADB.bat in folder
c:\Program Files\Android\android-sdk-windows\platform-tools\
Write into restartADB.bat this code:


adb kill-server && adb start-server
pause

Save restartADB.bat file.
If you want restart adb.exe server, run restartADB.bat by double click on icon.

Next example:

Open Total Commander

Open folder with adb.exe usually in
c:\Program Files\Android\android-sdk-windows\platform-tools\

Put into command line command: adb kill-server && adb start-server and press Enter

[caption id="attachment_778" align="alignleft" width="300" caption="ADB server restart by command line"]

[/caption]

Try restart ADB if this or similar errors:
Emulator] emulator: emulator window was out of view and was recentred

124

Resource int R.string.app_name to String Android example | resource-int-r-string-app_name-to-string-android-example

R.string.app_name to String example.
MyActivity.java


Resources res = getResources();
String sText = res.getString(R.string.app_name);

res/values/string.xml



<resources>
    <string name="app_name">My app name</string>
</resources>

How to install mount SD card for Eclipse Android Emulator | how-install-sd-card-on-android-eclipse-emulator

If you want download some *.apk file from internet and try on your emulator you get error than you have to install SD card. You have to closing Android emulator.
Mount Android emulator SD card instruction

In Eclipse go in menu Window - Android SDK and Avg Manager

Select Virtual devices

Select AVD Name where you need install SD card

Click on Edit button

In open dialog go to SD card - Size: and write 500

Press button Edit AVD

Run AVD emulator

Image how install SD card on Android emulator in Eclipse.

234

tag should specify a target API level Warning | uses-sdk-tag-should-specify-target-api

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:


    <uses-sdk android:minSdkVersion="4"
         android:targetSdkVersion="16" />

Editace: 2013-12-09 13:04:00
Počet článků v kategorii: 397
Url:delete-canvas-fill-canvas-android-example

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