Eclipse Graphical Editor does not display a xml source code - error bug
Try this solutions:
1.) Save xml file
2.) Close tab with xml file
3.) Reopen xml file
1.) Open from menu Window->Android SDK Manager
2.) Select available updates (Tools, SDK etc.)
3.) Install updates
1.) Open from menu Help->Check for Updates
2.) Install available plugins what You need
3.) Restart Eclipse
1.) Save xml file
2.) Close tab with xml file
3.) Reopen xml file
1.) Open from menu Window->Android SDK Manager
2.) Select available updates (Tools, SDK etc.)
3.) Install updates
1.) Open from menu Help->Check for Updates
2.) Install available plugins what You need
3.) Restart Eclipse
396LW NO topic_id
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Další témata ....(Topics)
GregorianCalendar cal = new GregorianCalendar(); Boolean b = cal.isLeapYear(2012); // true, Android example.
public class MainActivity extends Activity {
TextView txtV;
Context cntx;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
txtV = (TextView)findViewById(R.id.idLabel);
cntx = this;
StringBuilder strBuild = new StringBuilder();
GregorianCalendar cal = new GregorianCalendar();
Boolean b = cal.isLeapYear(2012); // true
strBuild.append("Is leap year 2012? " + b + "
");
b = cal.isLeapYear(2014); // false
strBuild.append("Is leap year 2014? " + b + "
");
txtV.setText(strBuild);
}
}
Physical pixel (px)
Density independent pixel (dp)
Dots per inch (dpi) .. physical pixels per inch
px = dp * (dpi / 160)
Density independent pixel (dp)
Dots per inch (dpi) .. physical pixels per inch
px = dp * (dpi / 160)
public static int dpToPx(int dp)
{
return (int) (dp * Resources.getSystem().getDisplayMetrics().density);
}
public static int pxToDp(int px)
{
return (int) (px / Resources.getSystem().getDisplayMetrics().density);
}
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();
}
private int _nVersionCode = 0;
private boolean _bNewVersion = false;
// onCreate
_nVersionCode = this.getPackageManager()
.getPackageInfo(this.getPackageName(), 0).versionCode;
Log.d(String.valueOf(_nVersionCode), "versionCode");
// onStart loadPreferences
public void loadPreferences() {
//SharedPreferences settings = getSharedPreferences(F.PREFERENCES_NAME, 0);
SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(this);
int nOldVersionCode = settings.getInt("_nVersionCode", 0);// old vesion
if(_nVersionCode > nOldVersionCode)
_bNewVersion = true;
}
// onDestroy savePreferences
public void savePreferences() {
SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(this);
SharedPreferences.Editor editor = settings.edit();
editor.putInt("_nVersionCode", _nVersionCode); // save current version code
editor.commit();
}
Change table row background color if user click on row Android example code.
MainActivity.java
main.xml
strings.xml
MainActivity.java
public class MainActivity extends Activity {
Boolean bColorYellow = true;
TextView hTextView;
TableRow hTableRow;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
hTextView = (TextView)findViewById(R.id.idTextView);
hTableRow = (TableRow)findViewById(R.id.idTableRow1);
} // end onCreate
public void myTableRowClickHandler(View view) {
switch (view.getId()) {
case R.id.idTableRow1:{
if(bColorYellow){
hTableRow.setBackgroundColor(Color.GREEN);
bColorYellow = false;
}
else{
hTableRow.setBackgroundColor(Color.YELLOW);
bColorYellow = true;
}
}
break;
}
}
}
main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="//schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TableLayout android:layout_height="wrap_content" android:layout_width="fill_parent" android:id="@+id/tableLayout1">
<TableRow android:id="@+id/idTableRow1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#5655AA"
android:onClick="@string/myTableRowClick"
android:focusable="true">
<TextView
android:id="@+id/idTextView"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
</TableRow>
</TableLayout>
</LinearLayout>
strings.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="hello">Hello World!</string>
<string name="app_name">TableRow</string>
<string name="myTableRowClick">myTableRowClickHandler</string>
</resources>
Editace: 2014-02-15 20:34:58
Počet článků v kategorii: 396
Url:eclipse-graphical-editor-does-not-display-code-error-bug