本文实例讲述了Android开发实现的Intent跳转工具类。分享给大家供大家参考，具体如下：
一、概述
Intent的中文意思是“意图，意向”，在Android中提供了Intent机制来协助应用间的交互与通讯，Intent负责对应用中一次操作的动作、动作涉及数据、附加数据进行描述，Android则根据此Intent的描述，负责找到对应的组件，将 Intent传递给调用的组件，并完成组件的调用。Intent不仅可用于应用程序之间，也可用于应用程序内部的Activity/Service之间的交互。因此，可以将Intent理解为不同组件之间通信的“媒介”专门提供组件互相调用的相关信息。
Intent可以启动一个Activity，也可以启动一个Service，还可以发起一个广播Broadcasts。
二、Intent跳转工具类代码
public class IntentUtil {
private static final String IMAGE_TYPE = "image
public static void showIntent(Activity context, Class clzz, String[] keys, String[] values) {
Intent intent = new Intent(context, clzz);
if (values != null && values.length > 0) {
for (int i = 0; i < values.length; i++) {
if (!TextUtils.isEmpty(keys[i]) && !TextUtils.isEmpty(values[i])) {
intent.putExtra(keys[i], values[i]);
}
}
}
context.startActivity(intent);
}
public static void showIntent(Activity context, Class clzz) {
showIntent(context, clzz, null, null);
}
public static void openCall(Context context, String tel) {
tel = tel.replaceAll("-", "");
Intent intent = new Intent();
// 激活源代码,添加intent对象
intent.setAction("android.intent.action.CALL");
intent.setData(Uri.parse("tel:" + tel));
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
context.startActivity(intent);
}
public static void pickPhoto(Activity context, int requestCode) {
Intent intent = new Intent();
intent.setType("image
public static void takePhoto(Activity context, int requestCode, Uri cameraUri) {
// 执行拍照前，应该先判断SD卡是否存在
String SDState = Environment.getExternalStorageState();
if (SDState.equals(Environment.MEDIA_MOUNTED)) {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);// "android.media.action.IMAGE_CAPTURE"
Logger.i(TAG, "cameraUri.path------>" + cameraUri.getPath());
intent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT, cameraUri);
context.startActivityForResult(intent, requestCode);
} else {
Toast.makeText(context, "内存卡不存在", Toast.LENGTH_LONG).show();
}
}
public static void takePhoto(Activity context, Uri uri, int requestCode) {
if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
ContentValues values = new ContentValues();
values.put(MediaStore.Images.Media.DISPLAY_NAME, String.valueOf(System.currentTimeMillis()) + ".jpg");
values.put(MediaStore.Images.Media.MIME_TYPE, "image
public void openPhotos(Activity context, int requestCode) {
if (openPhotosNormal(context, requestCode) //
&& openPhotosBrowser(context, requestCode) //
&& openPhotosFinally(context))
;
}
private boolean openPhotosFinally(Activity context) {
Toast.makeText(context, "您的系统没有文件浏览器或则相册支持,请安装！", Toast.LENGTH_LONG).show();
return false;
}
public static String getPhotoPathByLocalUri(Context context, Intent data) {
Uri photoUri = data.getData();
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Cursor cursor = context.getContentResolver().query(photoUri, filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String picturePath = cursor.getString(columnIndex);
cursor.close();
return picturePath;
}
private boolean openPhotosNormal(Activity activity, int actResultCode) {
Intent intent = new Intent(Intent.ACTION_PICK, null);
intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, IMAGE_TYPE);
try {
activity.startActivityForResult(intent, actResultCode);
} catch (android.content.ActivityNotFoundException e) {
return true;
}
return false;
}
private boolean openPhotosBrowser(Activity activity, int requestCode) {
Toast.makeText(activity, "没有相册软件，运行文件浏览器", Toast.LENGTH_LONG).show();
Intent intent = new Intent(Intent.ACTION_GET_CONTENT); // "android.intent.action.GET_CONTENT"
intent.setType(IMAGE_TYPE); // 查看类型 String IMAGE_UNSPECIFIED =
// "image
@SuppressLint("SimpleDateFormat")
public static Uri openCamera(Activity context, int requestCode) {
// 执行拍照前，应该先判断SD卡是否存在
if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
SimpleDateFormat timeStampFormat = new SimpleDateFormat("yyyy_MM_dd_HH_mm_ss");
String filename = timeStampFormat.format(new Date());
ContentValues values = new ContentValues();
values.put(MediaStore.Images.Media.TITLE, filename);
Uri photoUri = context.getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
intent.putExtra(MediaStore.EXTRA_OUTPUT, photoUri);
context.startActivityForResult(intent, requestCode);
return photoUri;
} else {
Toast.makeText(context, "内存卡不存在", Toast.LENGTH_LONG).show();
}
return null;
}
public static void doPhoto(Activity context, Intent data, int requestCode, int value, EditText editText,
ImageView imageView, Uri photoUri) {
// 从相册取图片，有些手机有异常情况，请注意
if (requestCode == value) {
if (data == null) {
Toast.makeText(context, "选择图片文件出错", Toast.LENGTH_LONG).show();
return;
}
photoUri = data.getData();
if (photoUri == null) {
Toast.makeText(context, "选择图片文件出错", Toast.LENGTH_LONG).show();
return;
}
}
String[] pojo = { MediaStore.Images.Media.DATA, MediaStore.Images.Media.DISPLAY_NAME };
ContentResolver resolver = context.getContentResolver();
Cursor cursor = resolver.query(photoUri, pojo, null, null, null);
String picPath = null;
String filename = null;
if (cursor != null) {
int columnIndex = cursor.getColumnIndexOrThrow(pojo[0]);
cursor.moveToFirst();
picPath = cursor.getString(columnIndex);
filename = cursor.getString(cursor.getColumnIndexOrThrow(pojo[1]));
editText.requestFocus();
editText.setText(filename);
cursor.close();
}
String dix = filename.substring(filename.lastIndexOf("."), filename.length());
if (filename != null
&& (dix.equalsIgnoreCase(".png") || dix.equalsIgnoreCase(".jpg") || dix.equalsIgnoreCase(".gif")
|| dix.equalsIgnoreCase(".bmp") || dix.equalsIgnoreCase(".jpeg") || dix
.equalsIgnoreCase(".tiff"))) {
// lastIntent.putExtra(KEY_PHOTO_PATH, picPath);
imageView.setVisibility(View.VISIBLE);
imageView.setImageURI(Uri.parse(picPath));
} else {
imageView.setVisibility(View.GONE);
Toast.makeText(context, "选择图片文件不正确", Toast.LENGTH_LONG).show();
}
}
public static void openFile(Context context, File file) {
Intent intent = new Intent();
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);// 默认的跳转类型,它会重新创建一个新的Activity
intent.setAction(android.content.Intent.ACTION_VIEW);
// 调用getMIMEType()来取得MimeType
String type = FileUtil.getMIMEType(file);
// 设置intent的file与MimeType
intent.setDataAndType(Uri.fromFile(file), type);
context.startActivity(intent);
}
public static void cropImage(Activity context, Uri uri, int outputX, int outputY, int requestCode) {
// 裁剪图片意图
Intent intent = new Intent("com.android.camera.action.CROP");
intent.setDataAndType(uri, "image
public static int readPictureDegree(String path) {
int degree = 0;
try {
ExifInterface exifInterface = new ExifInterface(path);
int orientation = exifInterface.getAttributeInt(ExifInterface.TAG_ORIENTATION,
ExifInterface.ORIENTATION_NORMAL);
switch (orientation) {
case ExifInterface.ORIENTATION_ROTATE_90:
degree = 90;
break;
case ExifInterface.ORIENTATION_ROTATE_180:
degree = 180;
break;
case ExifInterface.ORIENTATION_ROTATE_270:
degree = 270;
break;
}
} catch (IOException e) {
e.printStackTrace();
}
return degree;
}
public static void saveImage(Activity context, Intent data, int requestCode, ImageView imageView) {
Bitmap photo = null;
Uri photoUri = data.getData();
cropImage(context, photoUri, 500, 500, requestCode);
if (photoUri != null) {
photo = BitmapFactory.decodeFile(photoUri.getPath());
}
if (photo == null) {
Bundle extra = data.getExtras();
if (extra != null) {
photo = (Bitmap) extra.get("data");
ByteArrayOutputStream stream = new ByteArrayOutputStream();
photo.compress(Bitmap.CompressFormat.JPEG, 100, stream);
}
}
imageView.setImageBitmap(photo);
}
public static boolean saveCamera(Activity context, Intent data, Uri cameraUri, EditText editText,
ImageView imageView) {
try {
final Bundle extras = data.getExtras();
if (extras != null) {
Bitmap photo = extras.getParcelable("data");
imageView.setImageBitmap(photo);
}
if (cameraUri != null) {
String path = cameraUri.getPath();
Logger.i(TAG, "path-->" + path);
String filename = path.substring(path.lastIndexOf("/") + 1, path.length());
editText.setText(filename);
}
} catch (Exception e) {
e.printStackTrace();
return false;
}
return true;
}
}
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