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Unchecked call to add(E) as a member of raw type java.util.List


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// warnning
private List list = new ArrayList();

// ok /put type of added object
private List<String> list = new ArrayList<String>();

397LW NO topic_id




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Další témata ....(Topics)


162

Horizontal marquee text in Button android example | horizontal-marquee-text-in-button-android-example


If a button have focus, marquee will run.
Important:
android:singleLine="true"
android:ellipsize="marquee"
Optional:
android:marqueeRepeatLimit="1"



// main.xml
    <Button
        android:layout_width="150dip" 
        android:layout_height="wrap_content"
        android:text="My button with a long text for marquee as a example source code"
        android:singleLine="true"
        android:ellipsize="marquee"
        android:marqueeRepeatLimit="1"/>


364

Center View in RelativeLayout Android | center-view-in-relativelayout-android


RelativeLayout like parent, child Srollview is centered horizontal.
Second RelativeLayout in SrollView have gravity center, every child will centered horizontally and vertically.


<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="//schemas.android.com/apk/res/android"
    android:layout_width="match_parent" android:layout_height="match_parent"
    android:gravity="center_horizontal">

    <ScrollView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/scrollView2" >

        <RelativeLayout
            android:layout_width="320dp"
            android:layout_height="wrap_content"
            android:background="#e6f825"
            android:gravity="center">

            <Button
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="New Button"
                android:id="@+id/button" />
        </RelativeLayout>
    </ScrollView>

</RelativeLayout>
51

Get assets folder files to array of strings Android example | get-assets-folder-files-to-array-of-strings-android-example


Get assets folder files to array of strings.
Its show files in assets folder and sub folders:


    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        final AssetManager assetManager = getAssets();
        try {
			// for assets folder add empty string
                        String[] filelist = assetManager.list("");
                        // for assets/subFolderInAssets add only subfolder name
                        String[] filelistInSubfolder = assetManager.list("subFolderInAssets");
			if (filelist == null) {
			    // dir does not exist or is not a directory
			} else {
			    for (int i=0; i<filelist.length; i++) {
			        // Get filename of file or directory
			        String filename = filelist[i];
			    }
			}
                     
                        // if(filelistInSubfolder == null) ............  

		} catch (IOException e) {
			e.printStackTrace();
		}
     }


32

Create array of strings in xml file Android example | create-array-of-strings-in-xml-file-android-example


Example source code for Android developers how create array of strings in *.xml file.
You can using array of strings in Spinner ( combobox - dropdown list ) or ListView etc.

<resources>
    <string-array name="colors">
        <item>red</item>
        <item>orange</item>
        <item>yellow</item>
        <item>green</item>
        <item>blue</item>
    </string-array>
</resources>
0

EditText text changed java Android | edittext-text-changed


Google Android example source code - is text changed in EditText ?

EditText hEditText;

// TextChanged in onCreate
hEditText = (EditText)findViewById(R.id.idEditText);
hEditText.addTextChangedListener(new TextWatcher() {
public void afterTextChanged(Editable str) {
}

public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
}

public void onTextChanged(CharSequence sq, int start, int before,
int count) {
}
});


Editace: 2017-10-21 13:32:35
Počet článků v kategorii: 397
Url:unchecked-call-to-adde-as-a-member-of-raw-type-java-util-list

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