我正在做一个项目，用户可以通过拍照或从图库中选择图像来更改他们的个人资料照片。尽管遵循了多个教程，但他们使用的代码对我不起作用。每当我在 Dialog Box 中选择 Camera 时，它都会转到 Gallery，然后是 Camera。同样，当我在对话框中选择图库时，它确实会转到图库，但在 Image View 上显示图像之前，它仍会转到 Camera。是因为我使用的是 Android Lollipop 吗？我也不确定。
我怎样才能解决这个问题？
package com.example.user.imagestuff;
import android.app.Activity;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
public class MainActivity extends AppCompatActivity {
String[] Items;
ImageView mImageView;
Button mButton;
final int bmpHeight = 160;
final int bmpWidth = 160;
static final int CAMERA_CODE = 1;
static final int GALLERY_CODE = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mImageView = (ImageView) findViewById(R.id.mImageView);
mButton = (Button) findViewById(R.id.mButton);
Items = getResources().getStringArray(R.array.DialogItems);
mButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
ImageOnClick(v);
}
});
}
public void ImageOnClick(View v) {
Log.i("OnClick","True");
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
builder.setTitle(R.string.AlertTitle);
builder.setItems(Items, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
for(int i=0; i < Items.length; i++){
if (Items[i].equals("Camera")){
Intent CameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
if(CameraIntent.resolveActivity(getPackageManager()) != null){
startActivityForResult(CameraIntent, CAMERA_CODE);
}
}else if (Items[i].equals("Gallery")){
Log.i("GalleryCode",""+GALLERY_CODE);
Intent GalleryIntent = null;
GalleryIntent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
GalleryIntent.setType("image/*");
GalleryIntent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(GalleryIntent,GALLERY_CODE);
}
}
}
});
builder.show();
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == Activity.RESULT_OK){
switch(requestCode){
case 1:
Log.i("CameraCode",""+CAMERA_CODE);
Bundle bundle = data.getExtras();
Bitmap bmp = (Bitmap) bundle.get("data");
Bitmap resized = Bitmap.createScaledBitmap(bmp, bmpWidth,bmpHeight, true);
mImageView.setImageBitmap(resized);
case 0:
Log.i("GalleryCode",""+requestCode);
Uri ImageURI = data.getData();
mImageView.setImageURI(ImageURI);
}
}
}
最佳答案
因为您正在使用 for 循环来检查 Camera 和 Gallary Strings。 您需要删除 for 循环 并尝试使用下面的代码
而且你在你的 swith 案例中还遗漏了 break
final CharSequence[] items = {"Camera", "Gallery"}
if (items[item].equals("Camera")){
Intent CameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
if(CameraIntent.resolveActivity(getPackageManager()) != null){
startActivityForResult(CameraIntent, CAMERA_CODE);
}
}else if (items[item].equals("Gallery")){
Log.i("GalleryCode",""+GALLERY_CODE);
Intent GalleryIntent = null;
GalleryIntent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
GalleryIntent.setType("image/*");
GalleryIntent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(GalleryIntent,GALLERY_CODE);
}
第二个选项
您还可以放置 break; 关键字来在您的条件匹配时中断您的 for 循环
关于android - 从图库和相机获取图像 (Android Studio)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/49870325/