Eclipse Log.e println needs a message
Log.e println needs a message error.
E/AndroidRuntime(330): FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to start activity ComponentInfo{b.paint/b.paint.MainActivity}: java.lang.NullPointerException: println needs a message
Try this code:
E/AndroidRuntime(330): FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to start activity ComponentInfo{b.paint/b.paint.MainActivity}: java.lang.NullPointerException: println needs a message
Try this code:
// Error
String s = null;
Log.e("bla", s); // !!! error Log.e println needs a message error.
// OK
String s = null;
Log.e("bla", s+""); // OK
396LW NO topic_id
AD
Další témata ....(Topics)
You have to put your font fonts/samplefont.ttf into assets/fonts folder in your project!
// set own custom font from assets
TextView txt = (TextView) findViewById(R.id.custom_font);
Typeface mFace = Typeface.createFromAsset(getContext().getAssets(),
"fonts/samplefont.ttf");
txt.setTypeface(mFace);
If Android emulator freezes at startup, try create new virtual device with smaller memory and cpu usage, or select older version of Android, or buy new pc with higher performance.

- open AVD MANAGER
- press Create Virtual Device
- select Device with small memory usage (e.g. 480x800 of resolution) - Next
- check - Show downloadable ....
- Download - lower version of system Android, select, press - Next
- check data, Show Advanced Settings, check Use host... and press Finish

android:autoLink="all"
<!-- text1 automatically linkifies things like URLs and phone numbers. -->
<TextView
android:id="@+id/text1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:autoLink="all"
android:text="@string/link_text_auto"
/>
HorizontalScrollView ScrollView LinearLayout horizontal vertical Android xml basic example and image.
[caption id="attachment_889" align="alignleft" width="200" caption="horizontal scrollview horizontalscrollview android"]
[/caption]
Other sample
[caption id="attachment_889" align="alignleft" width="200" caption="horizontal scrollview horizontalscrollview android"]

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout android:id="@+id/LinearLayout01"
android:layout_width="fill_parent" android:layout_height="fill_parent"
xmlns:android="//schemas.android.com/apk/res/android">
// horizontal and vertical Scrollview
<ScrollView android:id="@+id/ScrollView01"
android:layout_height="135px" android:layout_width="wrap_content"
android:scrollbars="horizontal|vertical">
// HorizontalScrollview
<HorizontalScrollView android:id="@+id/HorizontalScrollView01"
android:layout_height="fill_parent" android:layout_width="wrap_content">
<LinearLayout android:id="@+id/LinearLayout02"
android:layout_width="wrap_content" android:orientation="vertical"
android:layout_height="fill_parent">
<LinearLayout android:orientation="horizontal"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:layout_weight="1">
<TextView android:text="red" android:gravity="center_horizontal"
android:background="#aa0000" android:layout_width="200px"
android:layout_height="fill_parent" android:layout_weight="1" />
<TextView android:text="green" android:gravity="center_horizontal"
android:background="#00aa00" android:layout_width="200px"
android:layout_height="fill_parent" android:layout_weight="1" />
<TextView android:text="blue" android:gravity="center_horizontal"
android:background="#0000aa" android:layout_width="200px"
android:layout_height="fill_parent" android:layout_weight="1" />
<TextView android:text="yellow" android:gravity="center_horizontal"
android:background="#aaaa00" android:layout_width="200px"
android:layout_height="fill_parent" android:layout_weight="1" />
</LinearLayout>
<LinearLayout android:orientation="vertical"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:layout_weight="1">
<TextView android:text="row one" android:textSize="15pt"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:layout_weight="1" />
<TextView android:text="row two" android:textSize="15pt"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:layout_weight="1" />
<TextView android:text="row three" android:textSize="15pt"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:layout_weight="1" />
<TextView android:text="row four" android:textSize="15pt"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:layout_weight="1" />
</LinearLayout>
</LinearLayout>
</HorizontalScrollView>
</ScrollView>
</LinearLayout>
Other sample
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="//schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="@+id/layout"
android:orientation="vertical" >
<HorizontalScrollView
android:id="@+id/horizontalScrollView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<LinearLayout
android:id="@+id/linearLayout1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Hello world! First TextView" />
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Large Text"
android:textAppearance="?android:attr/textAppearanceLarge" />
<TextView
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Medium Text"
android:textAppearance="?android:attr/textAppearanceMedium" />
</LinearLayout>
</HorizontalScrollView>
</LinearLayout>
How include layout defined in other xml file into another xml file example:
res/layout/my_layout.xml into
main.xml
res/layout/my_layout.xml into
main.xml
<include layout="@layout/my_layout" android:id="@+id/idMyLayout" />
Editace: 2014-02-15 20:27:55
Počet článků v kategorii: 396
Url:eclipse-log-e-println-needs-a-message