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Every fragment must have an empty constructor Android Java Class


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You have to add constructor!

    public static class YourFragment extends Fragment {
    //you have to add constructor!!!!!	
    public YourFragment(){}

        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
            View view = inflater.inflate(R.layout.activity_main, container, false);

            return view;
        }   

    }


397LW NO topic_id




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115

Progressbar change background and fore color - Android sample | progressbar-background-and-fore-color-android-sample


MainActivity.java

        ProgressBar mProgressBarScore;
      // onCreate
	mProgressBarScore = (ProgressBar)findViewById(R.id.progressBarScore);
	Resources res = getResources();
	mProgressBarScore.setProgressDrawable(res.getDrawable( R.drawable.my_progress));





res/layout/main.xml

       <ProgressBar
            android:id="@+id/progressBarScore"
            style="?android:attr/progressBarStyleHorizontal"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content" android:max="100"/>



res/drawable/my_progress.xml








android:startColor="#FF001A"
android:centerColor="#ff5a5d5a"
android:centerY="0.75"
android:endColor="#FF001A"
android:angle="270"
/>







android:startColor="#80ffd300"
android:centerColor="#80ffb600"
android:centerY="0.75"
android:endColor="#a0ffcb00"
android:angle="270"
/>



android:id="@android:id/progress"
>



android:radius="10dip" />
android:startColor="#00ff00"
android:centerColor="#80ffb600"
android:centerY="0.75"
android:endColor="#339900"
android:angle="270" />






284

WAV Sound Quality is Poor Android MediaPlayer | wav-sound-quality-is-poor-android-mediaplayer


Try convert WAV file to MP3 format for example by Audacity sound editor and replay:
//audacity.sourceforge.net/help/faq_i18n?s=install&i=lame-mp3


MediaPlayer mp  = MediaPlayer.create(getApplicationContext(), R.raw.mymp3file);
mp.setLooping(true);
mp.start();

241

Dialog With RadioButton Android Example | dialog-with-radiobutton-android-example



private void dialogModeFC() {
	try {
	final AlertDialog alertDialog =	new AlertDialog.Builder(MainActivity.this)
    .setTitle(R.string.select_dialog)
    //.setItems(
    .setSingleChoiceItems(R.array.select_dialog_items, -1
    		, new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int which) {

        /* User clicked so do some stuff 
        <item>Happy New Year</item>
        <item>Merry Christmas</item>
        <item>I Love You</item>
        */
            String[] items = getResources().getStringArray(R.array.select_dialog_items);
// list with boolean variables - which is true
//            for (int i = 0; i < _listMode.size(); i++) {
//            	_listMode.set(i, false);
//            }
//            _listMode.set(which, true);
            dialog.dismiss();
//            new AlertDialog.Builder(MainActivity.this)
//                    .setMessage("You selected: " + which + " , " + items[which])
//                    .show();
        }
    })
    .create();
	alertDialog.show();
	} catch (Exception e) {
		e.printStackTrace();
		Toast.makeText(getApplicationContext(), e.getMessage().toString(), Toast.LENGTH_LONG)
				.show();//("dialogModeFC", e.getMessage().toString());
	}
}// end dialogModeFC	
188

Error android.widget.LinearLayout.measureHorizontal LinearLayout.java | error-android-widget-linearlayout-measurehorizontal-linearlayout-java


Code with error:

ImageView imgV = (ImageView)findViewById(R.id.myView);
        imgV.setLayoutParams(new ViewGroup.LayoutParams(
        		ViewGroup.LayoutParams.WRAP_CONTENT,
        		0));


If you get error try this code:

        ViewGroup.LayoutParams layoutParams = imgV
				.getLayoutParams();
		layoutParams.height = 0;
		imgV.setLayoutParams(layoutParams);




java.lang.ClassCastException: android.view.ViewGroup$LayoutParams
at android.widget.LinearLayout.measureHorizontal(LinearLayout.java:659)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:311)
at android.view.View.measure(View.java:8313)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1017)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:386)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:309)
at android.view.View.measure(View.java:8313)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:250)
at android.view.View.measure(View.java:8313)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:531)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:309)
at android.view.View.measure(View.java:8313)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:250)
at android.view.View.measure(View.java:8313)
154

Create own custom Title Bar TitleBar with a Icon Android example | create-own-custom-title-titlebar-android-example


onCreate in MainActivity.java

    @Override
	protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
        setContentView(R.layout.main.xml);
        getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.custom_title);
}


You can add to titlebar different Views by xml file.
custom_title.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="//schemas.android.com/apk/res/android" android:id="@+id/screen"
    android:layout_width="fill_parent" android:layout_height="fill_parent"
    android:orientation="vertical">
    <TextView android:id="@+id/left_text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:text="Some text" />

    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_alignParentRight="true"
       
        android:src="@drawable/ic_launcher" />
    
</RelativeLayout>





custom-title-titlebar-android


Editace: 2014-09-10 10:40:35
Počet článků v kategorii: 397
Url:every-fragment-must-have-an-empty-constructor-android-java-class

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