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Commit f2ba1c5

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committed
添加CapturePhotoHelper进行封装
1 parent 508e78c commit f2ba1c5

7 files changed

Lines changed: 191 additions & 118 deletions

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‎src/main/AndroidManifest.xml‎

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</intent-filter>
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</activity>
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<activity
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android:name=".activity.CameraTakePhotoActivity"
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android:name=".activity.CapturePhotoActivity"
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android:label="@string/take_photo"
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android:screenOrientation="portrait" />
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<activity

‎src/main/java/com/clock/study/activity/CameraTakePhotoActivity.java‎

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package com.clock.study.activity;
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import android.content.Intent;
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import android.os.Bundle;
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import android.os.Environment;
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import android.support.v7.app.AppCompatActivity;
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import android.util.Log;
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import android.view.View;
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import com.clock.study.R;
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import com.clock.study.StudyApplication;
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import com.clock.study.helper.CapturePhotoHelper;
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import com.clock.utils.common.SystemUtils;
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import java.io.File;
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/**
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* 调用系统相机进行拍照
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*
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* @author Clock
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* @since 2016年05月13日
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*/
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public class CapturePhotoActivity extends AppCompatActivity implements View.OnClickListener {
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private final static String TAG = CapturePhotoActivity.class.getSimpleName();
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private CapturePhotoHelper mCapturePhotoHelper;
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.activity_camera_take_photo);
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File photoFolder = null;
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if (SystemUtils.mountedSdCard()) {
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File appFolder = new File(Environment.getExternalStorageDirectory(), StudyApplication.APP_MAIN_FOLDER_NAME);
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photoFolder = new File(appFolder, StudyApplication.PHOTO_FOLDER_NAME);
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}
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mCapturePhotoHelper = new CapturePhotoHelper(this, photoFolder);
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findViewById(R.id.iv_take_photo).setOnClickListener(this);
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}
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@Override
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public void onClick(View v) {
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int viewId = v.getId();
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if (viewId == R.id.iv_take_photo) {
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mCapturePhotoHelper.capture();
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}
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}
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@Override
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protected void onActivityResult(int requestCode, int resultCode, Intent data) {
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Log.i(TAG, "requestCode: " + requestCode + " resultCode: " + resultCode + " data: " + data);
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if (requestCode == CapturePhotoHelper.CAPTURE_PHOTO_REQUEST_CODE && resultCode == RESULT_OK) {
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File photoFile = mCapturePhotoHelper.getPhoto();
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if (photoFile != null) {
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PhotoPreviewActivity.preview(this, photoFile);
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}
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finish();
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} else {
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super.onActivityResult(requestCode, resultCode, data);
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}
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}
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}

‎src/main/java/com/clock/study/activity/MainActivity.java‎

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@@ -21,7 +21,7 @@ protected void onCreate(Bundle savedInstanceState) {
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public void onClick(View v) {
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int viewId = v.getId();
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if (viewId == R.id.btn_camera_take_photo) {
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Intent takePhotoIntent = new Intent(this, CameraTakePhotoActivity.class);
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Intent takePhotoIntent = new Intent(this, CapturePhotoActivity.class);
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startActivity(takePhotoIntent);
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}
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}

‎src/main/java/com/clock/study/activity/PhotoPreviewActivity.java‎

Lines changed: 1 addition & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -3,9 +3,8 @@
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import android.app.Activity;
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import android.content.Intent;
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import android.graphics.Bitmap;
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import android.support.v7.app.AppCompatActivity;
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import android.os.Bundle;
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import android.util.Log;
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import android.support.v7.app.AppCompatActivity;
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import android.widget.ImageView;
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import com.clock.study.R;
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package com.clock.study.helper;
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import android.app.Activity;
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import android.content.Intent;
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import android.content.pm.PackageManager;
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import android.content.pm.ResolveInfo;
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import android.net.Uri;
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import android.provider.MediaStore;
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import android.widget.Toast;
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import com.clock.study.R;
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import com.clock.utils.bitmap.BitmapUtils;
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import java.io.File;
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import java.io.IOException;
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import java.text.SimpleDateFormat;
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import java.util.Date;
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import java.util.List;
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/**
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* 拍照辅助类
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* <p/>
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* Created by Clock on 2016年5月21日.
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*/
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public class CapturePhotoHelper {
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private final static String TIMESTAMP_FORMAT = "yyyy_MM_dd_HH_mm_ss";
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public final static int CAPTURE_PHOTO_REQUEST_CODE = 0x1111;
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private Activity mActivity;
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/**
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* 存放图片的目录
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*/
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private File mPhotoFolder;
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/**
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* 拍照生成的图片文件
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*/
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private File mPhotoFile;
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/**
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* @param activity
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* @param photoFolder 存放生成照片的目录,目录不存在时候会自动创建,但不允许为null;
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*/
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public CapturePhotoHelper(Activity activity, File photoFolder) {
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this.mActivity = activity;
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this.mPhotoFolder = photoFolder;
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}
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/**
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* 拍照
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*/
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public void capture() {
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if (hasCamera()) {
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createPhotoFile();
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if (mPhotoFile == null) {
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Toast.makeText(mActivity, R.string.camera_open_error, Toast.LENGTH_SHORT).show();
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return;
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}
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Intent captureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
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Uri fileUri = Uri.fromFile(mPhotoFile);
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captureIntent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);
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mActivity.startActivityForResult(captureIntent, CAPTURE_PHOTO_REQUEST_CODE);
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} else {
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Toast.makeText(mActivity, R.string.camera_open_error, Toast.LENGTH_SHORT).show();
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}
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}
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/**
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* 创建照片文件
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*/
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private void createPhotoFile() {
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if (mPhotoFolder != null) {
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if (!mPhotoFolder.exists()) {//检查保存图片的目录存不存在
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mPhotoFolder.mkdirs();
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}
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String fileName = new SimpleDateFormat(TIMESTAMP_FORMAT).format(new Date());
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mPhotoFile = new File(mPhotoFolder, fileName + BitmapUtils.JPG_SUFFIX);
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if (mPhotoFile.exists()) {
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mPhotoFile.delete();
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}
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try {
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mPhotoFile.createNewFile();
88+
} catch (IOException e) {
89+
e.printStackTrace();
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mPhotoFile = null;
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}
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} else {
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mPhotoFile = null;
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Toast.makeText(mActivity, R.string.not_specify_a_directory, Toast.LENGTH_SHORT).show();
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}
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}
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/**
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* 判断系统中是否存在可以启动的相机应用
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*
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* @return 存在返回true,不存在返回false
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*/
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public boolean hasCamera() {
105+
PackageManager packageManager = mActivity.getPackageManager();
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Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
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List<ResolveInfo> list = packageManager.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);
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return list.size() > 0;
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}
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/**
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* 获取当前拍到的图片文件
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*
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* @return
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*/
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public File getPhoto() {
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return mPhotoFile;
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}
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}

‎src/main/res/values/strings.xml‎

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@@ -1,7 +1,8 @@
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<resources>
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<string name="app_name">AndroidStudyCode</string>
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<string name="start_camera_error">启动相机失败</string>
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<string name="camera_open_error">启动相机失败</string>
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<string name="photo_preview">PhotoPreview</string>
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<string name="take_photo">TakePhoto</string>
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<string name="save_photo">保存图片</string>
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<string name="not_specify_a_directory">未指定存储目录</string>
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</resources>

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