【发布时间】：2016-07-28 04:13:26
【问题描述】：
尝试创建一个安卓应用。它将进入我的第二个活动，并将在单击返回按钮时返回。但是我希望能够在第二个活动中拍照。当我单击按钮时，应用程序崩溃。
package com.example.gary.natureall;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.media.Image;
import android.os.Bundle;
import android.provider.MediaStore;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;
import java.io.IOException;
public class uploadPicScreen extends AppCompatActivity {
ImageView ivCamera, ivUpload, ivGallery, ivImage;
static final int REQUEST_IMAGE_CAPTURE = 144;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.upload_picture_layout);
Intent activityThatCalled = getIntent();
String previousActivity = activityThatCalled.getExtras().getString("callingActivity");
TextView callingActivityMessage = (TextView) findViewById(R.id.calling_activity_info_text_view);
callingActivityMessage.append(" "+ previousActivity);
ImageView ivCamera = (ImageView) findViewById(R.id.ivCamera);
ivImage = (ImageView) findViewById(R.id.ivImage);
if(! hasCamera())
ivCamera.setEnabled(false);
}
//Check if device has camera
private boolean hasCamera(){
return getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA_ANY);
}
//Launch the camera
public void launchCamera(View view){
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
//Take a picture and pass the result to onActivityResult
startActivityForResult(intent, REQUEST_IMAGE_CAPTURE);
}
//If you want to return to the image captured
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == REQUEST_IMAGE_CAPTURE && resultCode == RESULT_OK){
//Get the photo
Bundle extras = data.getExtras();
Bitmap photo = (Bitmap) extras.get("data");
ivImage.setImageBitmap(photo);
}
}
public void onReturnBtnClick(View view) {
Intent goingBack = new Intent();
setResult(RESULT_OK, goingBack);
finish();
}
}
这是错误信息。
07-25 20:56:53.451 9055-9055/com.example.gary.natureall E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.gary.natureall, PID: 9055
java.lang.IllegalStateException: Could not execute method for android:onClick
at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:293)
at android.view.View.performClick(View.java:5698)
at android.widget.TextView.performClick(TextView.java:10846)
at android.view.View$PerformClick.run(View.java:22565)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:158)
at android.app.ActivityThread.main(ActivityThread.java:7230)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Method.invoke(Native Method)
at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288)
at android.view.View.performClick(View.java:5698)
at android.widget.TextView.performClick(TextView.java:10846)
at android.view.View$PerformClick.run(View.java:22565)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:158)
at android.app.ActivityThread.main(ActivityThread.java:7230)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
Caused by: java.lang.SecurityException: Permission Denial: starting Intent { act=android.media.action.IMAGE_CAPTURE cmp=com.sec.android.app.camera/.Camera } from ProcessRecord{3ef341 9055:com.example.gary.natureall/u0a10} (pid=9055, uid=10010) with revoked permission android.permission.CAMERA
at android.os.Parcel.readException(Parcel.java:1620)
at android.os.Parcel.readException(Parcel.java:1573)
at android.app.ActivityManagerProxy.startActivity(ActivityManagerNative.java:3130)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1541)
at android.app.Activity.startActivityForResult(Activity.java:4284)
at android.support.v4.app.BaseFragmentActivityJB.startActivityForResult(BaseFragmentActivityJB.java:48)
at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:75)
at android.app.Activity.startActivityForResult(Activity.java:4231)
at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:871)
at com.example.gary.natureall.uploadPicScreen.launchCamera(uploadPicScreen.java:48)
at java.lang.reflect.Method.invoke(Native Method)
at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288)
at android.view.View.performClick(View.java:5698)
at android.widget.TextView.performClick(TextView.java:10846)
at android.view.View$PerformClick.run(View.java:22565)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:158)
at android.app.ActivityThread.main(ActivityThread.java:7230)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
【问题讨论】：
-
发布带有错误消息的 logcat 输出。
-
你得到什么错误信息？
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这个点击处理程序在哪里？ 07-25 20:56:53.451 9055-9055/com.example.gary.natureall E/AndroidRuntime：致命异常：主进程：com.example.gary.natureall，PID：9055 java.lang.IllegalStateException：无法执行方法对于 android:onClick
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标签： android