PickPhotoTask.java

package cn.mutils.app.media;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.provider.MediaStore;
import android.support.v4.content.CursorLoader;

import java.io.File;

import cn.mutils.app.ui.core.IActivityExecutor;
import cn.mutils.app.util.AppUtil;
import cn.mutils.core.event.IListener;

/**
 * Pick photo by system call
 */
@SuppressWarnings({"StringBufferReplaceableByString", "UnnecessaryInterfaceModifier"})
public class PickPhotoTask extends MediaTask {

    public static interface PickPhotoListener extends IListener {

        void onComplete(Uri uri);

    }

    public static final int EXPECT_WIDTH = 768;
    public static final int EXPECT_HEIGHT = 1024;

    public PickPhotoTask(IActivityExecutor executor, int requestCode) {
        super(executor, requestCode);
    }

    public boolean pickPhoto() {
        if (mLocked) {
            return false;
        }
        Intent intent = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
        mExecutor.startActivityForResult(intent, mRequestCode);
        mExecutor.addOnActivityResultListener(mOnActivityResultListener);
        mLocked = true;
        return true;
    }

    public void setListener(PickPhotoListener listener) {
        super.setListener(listener);
    }

    @Override
    protected void onActivityResult(Context context, int requestCode, int resultCode, Intent data) {
        if (resultCode != Activity.RESULT_OK) {
            return;
        }
        CursorLoader cursorLoader = new CursorLoader(mExecutor.getContext(), data.getData(),
                new String[]{MediaStore.Images.Media.DATA}, null, null, null);
        Cursor cursor = cursorLoader.loadInBackground();
        if (!cursor.moveToFirst()) {
            return;
        }
        String path = cursor.getString(cursor.getColumnIndex(MediaStore.Images.Media.DATA));
        if (path == null || path.isEmpty()) {
            return;
        }
        String mediaStorageDir = AppUtil.getDiskCacheDir(mExecutor.getContext(), AppUtil.TAG);
        if (mediaStorageDir == null) {
            return;
        }
        String md5 = AppUtil.md5(path);
        if (md5.isEmpty()) {
            return;
        }
        StringBuilder sb = new StringBuilder();
        sb.append(mediaStorageDir);
        sb.append("IMG_");
        sb.append(md5);
        sb.append(".jpg");
        String output = sb.toString();
        if (AppUtil.compress(path, output, EXPECT_WIDTH, EXPECT_HEIGHT)) {
            PickPhotoListener listener = getListener(PickPhotoListener.class);
            if (listener != null) {
                listener.onComplete(Uri.fromFile(new File(output)));
            }
        }
    }

}