【发布时间】:2017-11-17 11:47:22
【问题描述】:
我正在努力学习如何使用 Android Studio,而且我在这个领域还比较陌生。所以,我构建了这个实际上只是打开相机的小应用程序,但是当我构建项目时,我收到了这个恼人的错误,上面写着 "Error:(15, 33) error: invalid character: \65279" 。我已经在网上完成了我的研究,并确保我所有的文件编码都是 UTF-8 并且错误似乎仍然没有消失。这是我的 java 类。
package com.example.user.cameraapp;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.provider.MediaStore;
import android.os.Bundle;
import android.content.pm.PackageInfo;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
public class CameraActivity extends AppCompatActivity {
static final int REQUEST_IMAGE_CAPTURE =1;
ImageView img;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_camera);
Button btn1 = (Button)findViewById(R.id.startBtn);
img = (ImageView)findViewById(R.id.imageview);
//Disable the button if the user has no camera
if(!hasCamera()){
btn1.setEnabled(false);
}
}
private boolean hasCamera() {
return getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA_ANY);
}
private void launchCamera(){
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
//Take a picture pass results to onActivityResult
startActivityForResult(intent, REQUEST_IMAGE_CAPTURE);
}
//If you want to return the image taken
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if(requestCode==REQUEST_IMAGE_CAPTURE && resultCode== RESULT_OK){
Bundle extras = data.getExtras();
Bitmap photo = (Bitmap)extras.get("data");
img.setImageBitmap(photo);
}
}
}
//The error points to the specific import 'import android.widget.ImageView;
apply plugin: 'com.android.application'
android {
compileSdkVersion 23
buildToolsVersion "23.0.1"
defaultConfig {
applicationId "com.example.user.cameraapp"
minSdkVersion 14
targetSdkVersion 23
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:appcompat-v7:23.0.1'
}
【问题讨论】: