Android How to - Use Intent to Get Media content








The following code shows how to Use Intent to Get Media content.

Example

Register permission

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.examples.mediastore"
      android:versionCode="1"
      android:versionName="1.0">
    <uses-sdk android:minSdkVersion="4"
        android:targetSdkVersion="19" />

    <!-- Necessary for constructing a MediaStore Uri on external storage -->
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    
</manifest>

Main layout xml file

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >
    <Button
        android:id="@+id/imageButton"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Images" />
    <Button
        android:id="@+id/videoButton"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Video" />
    <Button
        android:id="@+id/audioButton"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Audio" />

</LinearLayout>

Main Activity Java code

import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
/*from  w  ww  .j a  v  a2  s.co  m*/
public class MainActivity extends Activity implements View.OnClickListener {
 
    private static final int REQUEST_AUDIO = 1;
    private static final int REQUEST_VIDEO = 2;
    private static final int REQUEST_IMAGE = 3;
    
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        Button images = (Button)findViewById(R.id.imageButton);
        images.setOnClickListener(this);
        Button videos = (Button)findViewById(R.id.videoButton);
        videos.setOnClickListener(this);
        Button audio = (Button)findViewById(R.id.audioButton);
        audio.setOnClickListener(this);
        
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
       
        if(resultCode == Activity.RESULT_OK) {
            //Uri to user selection returned in the Intent
            Uri selectedContent = data.getData();
            
            if(requestCode == REQUEST_IMAGE) {
                //Pass an InputStream to BitmapFactory
            }
            if(requestCode == REQUEST_VIDEO) {
                //Pass the Uri or a FileDescriptor to MediaPlayer
            }
            if(requestCode == REQUEST_AUDIO) {
                //Pass the Uri or a FileDescriptor to MediaPlayer
            }
        }
    }
    
    @Override
    public void onClick(View v) {
        Intent intent = new Intent();
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
            intent.setAction(Intent.ACTION_OPEN_DOCUMENT);
        } else {
            intent.setAction(Intent.ACTION_GET_CONTENT);
        }
        //Only return files to which we can open a stream
        intent.addCategory(Intent.CATEGORY_OPENABLE);
        //Set correct MIME type and launch
        switch(v.getId()) {
        case R.id.imageButton:
            intent.setType("image/*");
            startActivityForResult(intent, REQUEST_IMAGE);
            return;
        case R.id.videoButton:
            intent.setType("video/*");
            startActivityForResult(intent, REQUEST_VIDEO);
            return;
        case R.id.audioButton:
            intent.setType("audio/*");
            startActivityForResult(intent, REQUEST_AUDIO);
            return;
        default:
            return;
        }
    }
}
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