Open Save UTF-8 File To String Java Android Code


String sFileContent = readFile("myfile.txt",StandardCharsets.UTF_8);

	static String readFile(String path, Charset encoding) 
		  throws IOException 
		{
		  byte[] encoded = Files.readAllBytes(Paths.get(path));
		  return encoding.decode(ByteBuffer.wrap(encoded)).toString();
		}

// write file
String sOut = "text blah hello world etc.";
		writeToFile(sOut"someName.txt");	
	static void writeToFile(String sB,String name) {
		String folder = ("c:\\folder\");
		File f = new File(folder+ name);
		BufferedWriter writer = null;
			writer = new BufferedWriter( new OutputStreamWriter(
                           new FileOutputStream( folder+name),"UTF-8"));
			writer.write( sB);

				if ( writer != null)
					writer.close( );
	}

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Další témata ....(Topics)

368

ClassCastException fragments.MainActivity must implement OnHeadlineSelectedListener | classcastexception-fragments-mainactivity-must-implement-onheadlineselectedlistener

Problem:
You have two class with similar names HeadLinesFragment and HeadMyLinesFragment with OnHeadlineSelectedListener.
Check if call correct class in MainActivity.
For example if use HeadMyLinesFragment change implement to HeadMyLinesFragment too!


public class MainActivity extends FragmentActivity 
        implements HeadLinesFragment.OnHeadlineSelectedListener { 
// wrong implements you need correct class name 
//implements  HeadMyLinesFragment.OnHeadlineSelectedListener
//............
HeadMyLinesFragment firstFragment = new HeadMyLinesFragment(); // because in code using HeadMyLinesFragment

187

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)

390

Android 4.4 Lenovo A6000 black screen | android-4-4-lenovo-a6000-black-screen

Try reboot device.
Start device with start button on side of phone.
Screen will go to light black color.
Long press Start button for menu:
Power off
Reboot
Airplane mode

Reboot item is in same level like Start button.
Click on the screen - (Hear a click)
Now find OK button , it is under Reboot item on right side of screen.
Press OK (Hear a click)
Wait a moment.
If device to do nothing , try short press Start button (sreen will black)
and again to press Start button. If screen go to light black color,
try again find Reboot item as written above.

159

Array copy to Array Java Android example | array-copy-to-array-java-android-example


    String[] source = {"Hello","world","by","Android"};
    
    String[] destination = new String[source.length];
   
    System.arraycopy(source, 0, destination, 0, source.length);

314

Importing google-play-service library project to workspace issue | importing-google-play-service-library-project-to-workspace-issue

Try two way in Eclipse IDE:

1.) Import the library project into your Eclipse workspace.
Click File > Import,
select Android > Existing Android Code into Workspace, and browse to the copy of the library project to import it.
If project not visible with checkbox try next step as see below.

2.) Click
File > New > Other
select Android > Existing Android Code into Workspace, and browse to the copy of the library project to import it.

Editace: 2013-08-04 10:40:31
Počet článků v kategorii: 396
Url:open-save-utf-8-file-to-string-java-android-code