TakePhotoTask.java

package cn.mutils.app.media;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.provider.MediaStore;

import java.io.File;

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

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

    public static interface TakePhotoListener extends IListener {

        public void onComplete(Uri uri);

    }

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

    protected Uri mExtraOutput;

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

    public boolean takePhoto() {
        if (mLocked) {
            return false;
        }
        mExtraOutput = generateExtraOutput();
        if (mExtraOutput == null) {
            return false;
        }
        Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        intent.putExtra(MediaStore.EXTRA_OUTPUT, mExtraOutput);
        mExecutor.startActivityForResult(intent, mRequestCode);
        mExecutor.addOnActivityResultListener(mOnActivityResultListener);
        mLocked = true;
        return true;
    }

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

    protected Uri generateExtraOutput() {
        try {
            String mediaStorageDir = AppUtil.getDiskCacheDir(mExecutor.getContext(), AppUtil.TAG);
            if (mediaStorageDir == null) {
                return null;
            }
            DateTime date = new DateTime();
            date.setFormat("yyyyMMdd_HHmmss");
            StringBuilder sb = new StringBuilder();
            sb.append(mediaStorageDir);
            sb.append("IMG_");
            sb.append(date.toString());
            sb.append(".jpg");
            return Uri.fromFile(new File(sb.toString()));
        } catch (Exception e) {
            return null;
        }
    }

    @Override
    protected void onActivityResult(Context context, int requestCode, int resultCode, Intent data) {
        if (resultCode != Activity.RESULT_OK) {
            return;
        }
        Uri uri = data != null ? data.getData() : mExtraOutput;
        if (AppUtil.compress(uri.getPath(), EXPECT_WIDTH, EXPECT_HEIGHT)) {
            TakePhotoListener listener = getListener(TakePhotoListener.class);
            if (listener != null) {
                listener.onComplete(uri);
            }
        }
    }

}