我一直在尝试裁剪和调整图像大小,同时通过相机意图拍摄照片,但不明白我在这里做错了什么 - 即使文件正确也无法获取裁剪后的图像数据保存在手机上。
...
public class Add extends Activity {
private String imageFilePath;
...
protected void onCreate(Bundle savedInstanceState) {
...
imageFilePath = Environment.getExternalStorageDirectory().getAbsolutePath() + "/tmp/" + String.valueOf(System.currentTimeMillis()) + ".jpg";
imageFile = new File(imageFilePath);
imageFileUri = Uri.fromFile(imageFile);
Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT, imageFileUri);
intent.putExtra("crop", "true");
intent.putExtra("outputX", 600);
intent.putExtra("outputY", 600);
intent.putExtra("aspectX", 1);
intent.putExtra("aspectY", 1);
intent.putExtra("scale", true);
intent.putExtra("return-data", true);
startActivityForResult(intent, 0);
...
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch(requestCode) {
case 0 : {
Bitmap bitmap = BitmapFactory.decodeFile(imageFilePath);
}
}
}
如果我使用intent.putExtra("crop", "true");
,imageFilePath
将返回null,否则返回正确的文件。
感谢您的帮助!
答案 0 :(得分:11)
试一下::
private void doCrop() {
final ArrayList<CropOption> cropOptions = new ArrayList<CropOption>();
Intent intent = new Intent("com.android.camera.action.CROP");
intent.setType("image/*");
List<ResolveInfo> list = getPackageManager().queryIntentActivities(
intent, 0);
int size = list.size();
if (size == 0) {
Toast.makeText(this, "Can not find image crop app",
Toast.LENGTH_SHORT).show();
return;
} else {
intent.setData(mImageCaptureUri);
/*
* intent.putExtra("outputX", 200); intent.putExtra("outputY", 200);
*/
intent.putExtra("outputX", int_Height_crop);
intent.putExtra("outputY", int_Width_crop);
intent.putExtra("aspectX", 1);
intent.putExtra("aspectY", 1);
intent.putExtra("scale", true);
intent.putExtra("return-data", true);
if (size == 1) {
Intent i = new Intent(intent);
ResolveInfo res = list.get(0);
i.setComponent(new ComponentName(res.activityInfo.packageName,
res.activityInfo.name));
startActivityForResult(i, CROP_FROM_CAMERA);
} else {
for (ResolveInfo res : list) {
final CropOption co = new CropOption();
co.title = getPackageManager().getApplicationLabel(
res.activityInfo.applicationInfo);
co.icon = getPackageManager().getApplicationIcon(
res.activityInfo.applicationInfo);
co.appIntent = new Intent(intent);
co.appIntent
.setComponent(new ComponentName(
res.activityInfo.packageName,
res.activityInfo.name));
cropOptions.add(co);
}
CropOptionAdapter adapter = new CropOptionAdapter(
getApplicationContext(), cropOptions);
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Choose Crop App");
builder.setAdapter(adapter,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int item) {
startActivityForResult(
cropOptions.get(item).appIntent,
CROP_FROM_CAMERA);
}
});
builder.setOnCancelListener(new DialogInterface.OnCancelListener() {
@Override
public void onCancel(DialogInterface dialog) {
if (mImageCaptureUri != null) {
getContentResolver().delete(mImageCaptureUri, null,
null);
mImageCaptureUri = null;
}
}
});
AlertDialog alert = builder.create();
alert.show();
}
}
}
<强> Cropoption :: 强>
package com.any;
import android.content.Intent;
import android.graphics.drawable.Drawable;
public class CropOption {
public CharSequence title;
public Drawable icon;
public Intent appIntent;
}
答案 1 :(得分:0)
尝试删除此行:intent.putExtra(“return-data”,true);
您不需要传入此代码。该行代码将允许您通过数据意图检索位图。在这种情况下,您从URI获取位图。