Logo Questions Linux Laravel Mysql Ubuntu Git Menu
 

I want to set an image saved on sd card in main layout background through my application

i am creating an application in which i want set different background images in main xml linearlayout.I have stored 5 image files on sd card .now i want to select a pic and set it as my maim xml linearlayout background.so it will replace the previous image and display the new image as background.

like image 958
Sourav Avatar asked Jun 07 '11 09:06

Sourav


Video Answer


1 Answers

First assign an id to the main xml linearlayout, for example in the following case it is named" container"

    <!-- main.xml -->
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:id="@+id/container">
    <TextView  
        android:layout_width="fill_parent" 
        android:layout_height="wrap_content" 
        android:text="@string/hello"
        />
</LinearLayout>

Then in the .java code you can find the layout object and set a drawable as its background:

package org.example.app;

import android.app.Activity;
import android.content.Intent;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;

public class Main extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        String pathName = "/sdcard/gif001.gif";
        Resources res = getResources();
        Bitmap bitmap = BitmapFactory.decodeFile(pathName);
        BitmapDrawable bd = new BitmapDrawable(res, bitmap);
        View view = findViewById(R.id.container);
        view.setBackgroundDrawable(bd);
    }
}

Regards

Ziteng Chen

like image 165
Ziteng Chen Avatar answered Sep 19 '22 12:09

Ziteng Chen