正文
android 头像选择以及裁剪
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一、布局申明
<ImageView
android:id="@+id/head_image"
android:layout_width="80dp"
android:layout_height="80dp"
android:layout_centerHorizontal="true"
android:background="@drawable/default_avatar" />
二、Activity中代码
private ImageView headImageView; private BitmapUtil bitmapUtil = new BitmapUtil(this);
private File headFile; headImageView = (ImageView) findViewById(R.id.head_image); headImageView.setOnClickListener(new View.OnClickListener() { @Override
public void onClick(View v) { new android.app.AlertDialog.Builder(RegisterActivity.this)
.setTitle("头像选择")
.setNegativeButton("相册选取",
new DialogInterface.OnClickListener() { @Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
bitmapUtil.doCropPhoto(RegisterActivity.this);
}
})
.setPositiveButton("相机拍照",
new DialogInterface.OnClickListener() { @Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
String status = Environment.getExternalStorageState();
if (status.equals(Environment.MEDIA_MOUNTED)) {// 判断是否有SD卡
bitmapUtil.doTakePhoto(RegisterActivity.this);// 用户点击了从照相机获取
}
}
}).show();
}
});
三、Activity回调方法
/**
* 头像选择回调
* resultCode: 正常返回-1 用户后退返回0
*/
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
Log.i("TAG", requestCode + " ： " + resultCode);
if(resultCode == RESULT_OK) {
switch (requestCode) { case BitmapUtil.activity_result_camara_with_data: // 拍照
try {
if (bitmapUtil.tempFile != null) {
bitmapUtil.cropImageByCamera();
}
} catch (Exception e) {
e.printStackTrace();
}
break;
case BitmapUtil.activity_result_cropimage_with_data:
try {
if (bitmapUtil.tempFile != null) {
headFile = bitmapUtil.tempFile; Bitmap bitmap = BitmapFactory.decodeStream(new FileInputStream(headFile));
headImageView.setImageBitmap(bitmap);
}
} catch (Exception e) {
e.printStackTrace();
}
break;
}
}
}
四、工具类
public class BitmapUtil {
public final static int activity_result_camara_with_data = 1006;
public final static int activity_result_cropimage_with_data = 1007;
public File tempFile;
private Activity activity;
public BitmapUtil(Activity activity) {
super();
this.activity = activity;
}
/**
* 照相获取图片
*/
public void selectPicFromCamera() {
// if (!CommonUtils.isExitsSdcard()) {
// Toast.makeText(activity, "SD卡不存在，不能拍照", Toast.LENGTH_SHORT).show();
// return;
// }
if(createNewFile()) {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(tempFile));
activity.startActivityForResult(intent, activity_result_camara_with_data);
}
}
/**
* 照相获取完成图片时候裁剪图片
*/
public void cropImageByCamera() {
Intent intent = new Intent("com.android.camera.action.CROP");
intent.setDataAndType(Uri.fromFile(tempFile), "image/*");
buildCropIntent(intent);
activity.startActivityForResult(intent, activity_result_cropimage_with_data);
}
/**
* 从图库获取图片
*/
public void selectPicFromLocal() {
Intent intent;
if (Build.VERSION.SDK_INT < 19) {
intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("image/*");
} else {
intent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
}
if(createNewFile()) {
buildCropIntent(intent);
activity.startActivityForResult(intent, activity_result_cropimage_with_data);
}
}
/**
* 构建截图的intent
* @param intent
*/
private void buildCropIntent(Intent intent) {
intent.putExtra("crop", "true");
intent.putExtra("aspectX", 1);
intent.putExtra("aspectY", 1);
intent.putExtra("outputX", 100);
intent.putExtra("outputY", 100);
intent.putExtra("scale", true);
intent.putExtra("return-data", true);
intent.putExtra("outputFormat", Bitmap.CompressFormat.JPEG.toString());
intent.putExtra("noFaceDetection", false); // no face detection
intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(tempFile));
}
/**
* 创建新文件
* @return
*/
private boolean createNewFile() {
if (!CommonUtils.isExitsSdcard()) {
Toast.makeText(activity, "SD卡不存在", Toast.LENGTH_SHORT).show();
return false;
}
tempFile = new File(Environment.getExternalStorageDirectory().getPath() + "/stchat" + "/images/" + System.currentTimeMillis() + ".jpg");
if(!tempFile.getParentFile().exists()) {
tempFile.getParentFile().mkdirs();
}
if(!tempFile.exists()) {
try {
tempFile.createNewFile();
} catch (IOException e) {
e.printStackTrace();
return false;
}
}
return true;
}
public static void setBitmap(ImageView view, String head_portrait) {
// 设置用户头像
Bitmap bitmap = BitmapFactory.decodeFile(head_portrait);
if(bitmap != null) {
view.setImageBitmap(bitmap);
}
}
}
