Android Open Source - WhiteSnowfallLiveWallpaper_Android Snow Fall Back Image Activity

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License

The source code is released under:
GNU General Public License
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Java Source Code

package cc.co.techzealous.snowfall;
/*from w w  w .  j a  v  a 2s. co  m*/
import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.provider.MediaStore;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import cc.co.techzealous.snowfall.utils.SnowFallConstants;

public class SnowFallBackImageActivity extends Activity {

  private SharedPreferences prefs;
  private Button buttonCancel;
  private Button buttonSelect;
  private Button buttonClear;
  private TextView textViewCurrentImage;
  private int imageRequestCode = 1;
  
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.backimage);
    
    prefs = PreferenceManager.getDefaultSharedPreferences(this);
    buttonCancel = (Button) findViewById(R.id.buttonImageCancel);
    buttonSelect = (Button) findViewById(R.id.buttonImageSelect);
    buttonClear = (Button) findViewById(R.id.buttonImageClear);
    textViewCurrentImage = (TextView) findViewById(R.id.textViewCurrentImage);
    
    textViewCurrentImage.setText(prefs.getString(SnowFallConstants.PREF_BACKGROUND_PATH, "No image is set"));
    
    
    buttonCancel.setOnClickListener(new OnClickListener() {
      @Override
      public void onClick(View v) {
        finish();
      }
    });
    
    buttonSelect.setOnClickListener(new OnClickListener() {
      @Override
      public void onClick(View v) {
        Intent i = new Intent(Intent.ACTION_PICK, Uri.parse("image/*"));
        i.setType("image/*");
        startActivityForResult(i, imageRequestCode);
      }
    });
    
    buttonClear.setOnClickListener(new OnClickListener() {
      @Override
      public void onClick(View v) {
        prefs.edit().remove(SnowFallConstants.PREF_BACKGROUND_PATH).commit();
        Toast.makeText(SnowFallBackImageActivity.this, getResources().getString(R.string.image_cleared), Toast.LENGTH_SHORT).show();
        textViewCurrentImage.setText(prefs.getString(SnowFallConstants.PREF_BACKGROUND_PATH, "No image is set"));
      }
    });
    
    
  }
  
  @Override
  protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
    if(requestCode == imageRequestCode) {
      if(resultCode == Activity.RESULT_OK) {
        Uri imageUri = intent.getData();
        
        //solution 1
//        InputStream imageStream = null;
//        try {
//          imageStream = getContentResolver().openInputStream(imageUri);
//        } catch (FileNotFoundException e) {
//          e.printStackTrace();
//        }
//        Bitmap selectedImage = BitmapFactory.decodeStream(imageStream);
//to get the image (applicable to both solutions): Bitmap slectedImage_s2 = BitmapFactory.decodeFile(filePath);
//after this canvas.drawBitmap(selectedImage_s2, new Matrix(), null);
        
        //solution 2
        String[] filePathColumn = {MediaStore.Images.Media.DATA};
        String[] fileSizeColumn = {MediaStore.Images.Media.SIZE};
        //get the file path
        Cursor cursor = getContentResolver().query(imageUri, filePathColumn, null, null, null);
        String filePath = "";
        if(cursor.moveToFirst()) {
          int columnIndex = cursor.getColumnIndexOrThrow(filePathColumn[0]);
          filePath = cursor.getString(columnIndex);
        }
        //get the size of the image in bytes (it is long)
        cursor = getContentResolver().query(imageUri, fileSizeColumn, null, null, null);
        long fileSize = 0;
        if(cursor.moveToFirst()) {
          int columnIndexSize = cursor.getColumnIndexOrThrow(fileSizeColumn[0]);
          fileSize = cursor.getLong(columnIndexSize);
          cursor.close();
        }
        //if the size is more than 1.5MB don't load it
        if(fileSize > SnowFallConstants.MAX_FILE_SIZE) {
          Toast.makeText(SnowFallBackImageActivity.this, getResources().getString(R.string.max_size_exceeded), Toast.LENGTH_LONG).show();
        } else {
          prefs.edit().putString(SnowFallConstants.PREF_BACKGROUND_PATH, filePath).commit();
          prefs.edit().putBoolean(SnowFallConstants.PREF_RELOAD_BACKGROUN, true).commit();
        }
        finish();
      }
    }
  }
}
Java Source Code List
