我做了两个按钮。一个打开相机，一个打开画廊。相机一个工作正常，但画廊一个没有...它打开，但当我从画廊选择一个图片时，应用程序意外关闭。
package com.example.me;
import android.os.Bundle;
import java.io.IOException;
import java.io.InputStream;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.view.View;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.ImageView;
public class MainActivity extends Activity implements View.OnClickListener{
Button b;
ImageView iv;
Intent i;
final static int cameraData = 0;
Bitmap bmp;
private static final int SELECT_IMAGE = 1;
Button clickk;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initialize();
InputStream is = getResources().openRawResource(R.drawable.ic_launcher);
bmp = BitmapFactory.decodeStream(is);
}
private void initialize() {
// TODO Auto-generated method stub
iv = (ImageView) findViewById (R.id.imageView1);
b = (Button) findViewById (R.id.btakePic);
clickk = (Button) findViewById (R.id.bChose);
b.setOnClickListener(this);
clickk.setOnClickListener(this);
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()){
case R.id.btakePic:
i = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(i, cameraData);
break;
case R.id.bChose:
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);//
startActivityForResult(Intent.createChooser(intent, "Select Picture"),SELECT_IMAGE);
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK){
Bundle extras = data.getExtras();
bmp = (Bitmap) extras.get("data");
iv.setImageBitmap(bmp);
}
}
}
以下是日志：
08-05 11:30:19.455: E/ActivityThread(5576): Activity com.android.internal.app.ChooserActivity has leaked IntentReceiver com.android.internal.app.ResolverActivity$1@412fd3e0 that was originally registered here. Are you missing a call to unregisterReceiver()?
08-05 11:30:19.455: E/ActivityThread(5576): android.app.IntentReceiverLeaked: Activity com.android.internal.app.ChooserActivity has leaked IntentReceiver com.android.internal.app.ResolverActivity$1@412fd3e0 that was originally registered here. Are you missing a call to unregisterReceiver()?
08-05 11:30:19.455: E/ActivityThread(5576): at android.app.LoadedApk$ReceiverDispatcher.<init>(LoadedApk.java:763)
08-05 11:30:19.455: E/ActivityThread(5576): at android.app.LoadedApk.getReceiverDispatcher(LoadedApk.java:567)
08-05 11:30:19.455: E/ActivityThread(5576): at android.app.ContextImpl.registerReceiverInternal(ContextImpl.java:1099)
08-05 11:30:19.455: E/ActivityThread(5576): at android.app.ContextImpl.registerReceiver(ContextImpl.java:1086)
08-05 11:30:19.455: E/ActivityThread(5576): at android.app.ContextImpl.registerReceiver(ContextImpl.java:1080)
08-05 11:30:19.455: E/ActivityThread(5576): at android.content.ContextWrapper.registerReceiver(ContextWrapper.java:348)
08-05 11:30:19.455: E/ActivityThread(5576): at com.android.internal.content.PackageMonitor.register(PackageMonitor.java:65)
08-05 11:30:19.455: E/ActivityThread(5576): at com.android.internal.app.ResolverActivity.onCreate(ResolverActivity.java:101)
08-05 11:30:19.455: E/ActivityThread(5576): at com.android.internal.app.ChooserActivity.onCreate(ChooserActivity.java:53)
08-05 11:30:19.455: E/ActivityThread(5576): at android.app.Activity.performCreate(Activity.java:4465)
08-05 11:30:19.455: E/ActivityThread(5576): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1053)
08-05 11:30:19.455: E/ActivityThread(5576): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1934)
08-05 11:30:19.455: E/ActivityThread(5576): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1995)
08-05 11:30:19.455: E/ActivityThread(5576): at android.app.ActivityThread.access$600(ActivityThread.java:128)
08-05 11:30:19.455: E/ActivityThread(5576): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1161)
08-05 11:30:19.455: E/ActivityThread(5576): at android.os.Handler.dispatchMessage(Handler.java:99)
08-05 11:30:19.455: E/ActivityThread(5576): at android.os.Looper.loop(Looper.java:137)
08-05 11:30:19.455: E/ActivityThread(5576): at android.app.ActivityThread.main(ActivityThread.java:4514)
08-05 11:30:19.455: E/ActivityThread(5576): at java.lang.reflect.Method.invokeNative(Native Method)
08-05 11:30:19.455: E/ActivityThread(5576): at java.lang.reflect.Method.invoke(Method.java:511)
08-05 11:30:19.455: E/ActivityThread(5576): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:790)
08-05 11:30:19.455: E/ActivityThread(5576): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557)
08-05 11:30:19.455: E/ActivityThread(5576): at dalvik.system.NativeStart.main(Native Method)
08-05 11:30:19.471: D/OpenGLRenderer(5576): Flushing caches (mode 1)
08-05 11:30:42.932: D/AndroidRuntime(5576): Shutting down VM
08-05 11:30:42.932: W/dalvikvm(5576): threadid=1: thread exiting with uncaught exception (group=0x40be41f8)
08-05 11:30:42.932: E/AndroidRuntime(5576): FATAL EXCEPTION: main
08-05 11:30:42.932: E/AndroidRuntime(5576): java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1, result=-1, data=Intent { dat=content://media/external/images/media/774 }} to activity {com.example.me/com.example.me.MainActivity}: java.lang.NullPointerException
08-05 11:30:42.932: E/AndroidRuntime(5576): at android.app.ActivityThread.deliverResults(ActivityThread.java:2994)
08-05 11:30:42.932: E/AndroidRuntime(5576): at android.app.ActivityThread.handleSendResult(ActivityThread.java:3037)
08-05 11:30:42.932: E/AndroidRuntime(5576): at android.app.ActivityThread.access$1100(ActivityThread.java:128)
08-05 11:30:42.932: E/AndroidRuntime(5576): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1191)
08-05 11:30:42.932: E/AndroidRuntime(5576): at android.os.Handler.dispatchMessage(Handler.java:99)
08-05 11:30:42.932: E/AndroidRuntime(5576): at android.os.Looper.loop(Looper.java:137)
08-05 11:30:42.932: E/AndroidRuntime(5576): at android.app.ActivityThread.main(ActivityThread.java:4514)
08-05 11:30:42.932: E/AndroidRuntime(5576): at java.lang.reflect.Method.invokeNative(Native Method)
08-05 11:30:42.932: E/AndroidRuntime(5576): at java.lang.reflect.Method.invoke(Method.java:511)
08-05 11:30:42.932: E/AndroidRuntime(5576): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:790)
08-05 11:30:42.932: E/AndroidRuntime(5576): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557)
08-05 11:30:42.932: E/AndroidRuntime(5576): at dalvik.system.NativeStart.main(Native Method)
08-05 11:30:42.932: E/AndroidRuntime(5576): Caused by: java.lang.NullPointerException
08-05 11:30:42.932: E/AndroidRuntime(5576): at com.example.me.MainActivity.onActivityResult(MainActivity.java:72)
08-05 11:30:42.932: E/AndroidRuntime(5576): at android.app.Activity.dispatchActivityResult(Activity.java:4649)
08-05 11:30:42.932: E/AndroidRuntime(5576): at android.app.ActivityThread.deliverResults(ActivityThread.java:2990)
08-05 11:30:42.932: E/AndroidRuntime(5576): ... 11 more
这是我现在拥有的。它仍然无法正常工作。我猜我应该把相机结果和画廊结果放在一起？
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK){
Bundle extras = data.getExtras();
bmp = (Bitmap) extras.get("data");
iv.setImageBitmap(bmp);
if (requestCode == SELECT_IMAGE) {
if(resultCode == RESULT_OK){
Uri selectedImage = data.getData();
String[] filePathColumn = {MediaStore.Images.Media.DATA};
Cursor cursor = getContentResolver().query(selectedImage, filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String filePath = cursor.getString(columnIndex);
cursor.close();
Log.i(myTag, filePath);
File imgFile = new File(filePath);
//Get your image out of the file
//do with it what you will.
Bundle extras1 = data.getExtras();
bmp = (Bitmap) extras1.get("data");
iv.setImageBitmap(bmp);
我的标签也应该是一个字符串吗？
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == cameraData)
if (resultCode == RESULT_OK) {
Bundle extras = data.getExtras();
bmp = (Bitmap) extras.get("data");
iv.setImageBitmap(bmp);
if (requestCode == SELECT_IMAGE && resultCode == RESULT_OK && null != data) {
Uri selectedImage = data.getData();
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(selectedImage,
filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String picturePath = cursor.getString(columnIndex);
cursor.close();
ImageView imageView = (ImageView) findViewById(R.id.imageView1);
imageView.setImageBitmap(BitmapFactory.decodeFile(picturePath));
答案 0 :(得分：0)
您需要以不同于onActivityResult（）中的相机来处理图库。这是一个粗略的例子，说明了从图库中处理选择图像需要做些什么。
if (requestCode == SELECT_IMAGE) {
if(resultCode == RESULT_OK){
Uri selectedImage = data.getData();
String[] filePathColumn = {MediaStore.Images.Media.DATA};
Cursor cursor = getContentResolver().query(selectedImage, filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String filePath = cursor.getString(columnIndex);
cursor.close();
Log.i(myTag, filePath);
File imgFile = new File(filePath);
//Get your image out of the file
//do with it what you will.
}
}
答案 1 :(得分：0)
试试这个代码......
yourGalleryButton.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
Intent photoPickerIntent = new Intent(Intent.ACTION_GET_CONTENT);
photoPickerIntent.setType("image/*");
startActivityForResult(photoPickerIntent, 1);
}
});
protected void onActivityResult(int requestCode, int resultcode, Intent intent)
{
super.onActivityResult(requestCode, resultcode, intent);
if (requestCode == 1)
{
if (intent != null && resultcode == RESULT_OK)
{
Uri selectedImage = intent.getData();
String[] filePathColumn = {MediaStore.Images.Media.DATA};
Cursor cursor = getContentResolver().query(selectedImage, filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String filePath = cursor.getString(columnIndex);
cursor.close();
if(bmp != null && !bmp.isRecycled())
{
bmp = null;
}
bmp = BitmapFactory.decodeFile(filePath);
}
else
{
Log.d("Status:", "Photopicker canceled");
}
}
}
}
这是简单易用的代码.....
答案 2 :(得分：0)
这是有效的代码。我将-------放在我移动的支架上以使活动起作用。下面有3个刹车，我刚刚搬了一个。
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == cameraData)
if (resultCode == RESULT_OK) {
Bundle extras = data.getExtras();
bmp = (Bitmap) extras.get("data");
iv.setImageBitmap(bmp);
-----}
if (requestCode == SELECT_IMAGE && resultCode == RESULT_OK && null != data) {
Uri selectedImage = data.getData();
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(selectedImage,
filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String picturePath = cursor.getString(columnIndex);
cursor.close();
ImageView imageView = (ImageView) findViewById(R.id.imageView1);
imageView.setImageBitmap(BitmapFactory.decodeFile(picturePath));
}
}