06-25 15:03:02.596: E/WindowManager(29217): at com.android.grad.PreviewActivity$1.onClick(PreviewActivity.java:36)
06-25 15:03:02.596: E/WindowManager(29217): at android.view.View.performClick(View.java:3527)
06-25 15:03:02.596: E/WindowManager(29217): at android.view.View$PerformClick.run(View.java:14234)
06-25 15:03:02.596: E/WindowManager(29217): at android.os.Handler.handleCallback(Handler.java:605)
06-25 15:03:02.596: E/WindowManager(29217): at android.os.Handler.dispatchMessage(Handler.java:92)
06-25 15:03:02.596: E/WindowManager(29217): at android.os.Looper.loop(Looper.java:137)
06-25 15:03:02.596: E/WindowManager(29217): at android.app.ActivityThread.main(ActivityThread.java:4441)
06-25 15:03:02.596: E/WindowManager(29217): at java.lang.reflect.Method.invokeNative(Native Method)
06-25 15:03:02.596: E/WindowManager(29217): at java.lang.reflect.Method.invoke(Method.java:511)
06-25 15:03:02.596: E/WindowManager(29217): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
06-25 15:03:02.596: E/WindowManager(29217): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
06-25 15:03:02.596: E/WindowManager(29217): at dalvik.system.NativeStart.main(Native Method)
06-25 15:03:04.186: I/Process(29217): Sending signal. PID: 29217 SIG: 9
06-25 15:03:04.566: D/TextLayoutCache(29339): Using debug level: 0 - Debug Enabled: 0
06-25 15:03:04.606: D/libEGL(29339): loaded /system/lib/egl/libGLES_android.so
06-25 15:03:04.606: D/libEGL(29339): loaded /system/lib/egl/libEGL_adreno200.so
06-25 15:03:04.636: D/libEGL(29339): loaded /system/lib/egl/libGLESv1_CM_adreno200.so
06-25 15:03:04.636: D/dalvikvm(29339): GC_CONCURRENT freed 117K, 3% free 9125K/9351K, paused 4ms+17ms
06-25 15:03:04.636: D/libEGL(29339): loaded /system/lib/egl/libGLESv2_adreno200.so
06-25 15:03:04.706: D/OpenGLRenderer(29339): Enabling debug mode 0
06-25 15:03:07.326: D/OpenGLRenderer(29339): Flushing caches (mode 0)
06-25 15:03:07.326: W/IInputConnectionWrapper(29339): showStatusIcon on inactive InputConnection
06-25 15:03:07.366: D/OpenGLRenderer(29339): Flushing caches (mode 1)
我知道之前提到的这个错误，我看到了解决方案，但解决方案不能与我合作。这是我的代码。
错误出现在pd.show（）。
@Override
protected void onPreExecute() {
//network.loadData();
file = new File(
Environment
.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES),
"MyCameraApp" + File.separator + "project");
createProgressDialog();
pd.show();
}
@Override
protected Boolean doInBackground(String... params) {
try {
crop = new Crop(params[0]);
crop.cropID();
croppedID = crop.getId();
publishProgress(2);
} catch (IOException e) {
}
segmentNumbers();
return true;
}
@Override
protected void onProgressUpdate(Integer... values) {
pd.incrementProgressBy(values[0]);
}
@Override
protected void onPostExecute(Boolean result) {
pd.dismiss();
Toast.makeText(activity, "Processing Done", Toast.LENGTH_LONG).show();
}
private void createProgressDialog() {
pd = new ProgressDialog(activity);
pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
pd.setTitle("Extract ID");
pd.setMessage("Processing...");
pd.setIcon(R.drawable.ic_launcher);
pd.setProgress(0);
pd.setCancelable(false);
}
onpreExecution方法： - 我正在显示我的对话框。 doInBackGround方法： - 我执行我用于分割图片的segmentNumber（）。 onPostExecution方法： - 我正在驳回我的对话。
修改后的代码：
package com.OCR.ID;
import java.io.File;
import java.io.IOException;
import org.neuroph.contrib.imgrec.image.Image;
import org.neuroph.contrib.imgrec.image.ImageFactory;
import android.app.Activity;
import android.app.ProgressDialog;
import android.os.AsyncTask;
import android.os.Environment;
import android.util.Log;
import android.widget.Toast;
import com.Camera.R;
/**
* @author Mahmud
*
*/
public class Segement extends AsyncTask<String, Integer, Boolean> {
int[][] croppedID;
Crop crop;
private Activity activity;
private ProgressDialog pd;
File file;
private String ID;
private Neuroph network;
public Segement(Activity activity, ProgressDialog pd) throws IOException {
this.activity = activity;
this.pd = pd;
//network = new Neuroph(this.activity);
}
@Override
protected void onPreExecute() {
//network.loadData();
file = new File(
Environment
.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES),
"MyCameraApp" + File.separator + "project");
}
@Override
protected Boolean doInBackground(String... params) {
try {
crop = new Crop(params[0]);
crop.cropID();
croppedID = crop.getId();
publishProgress(2);
} catch (IOException e) {
}
segmentNumbers();
return true;
}
@Override
protected void onProgressUpdate(Integer... values) {
pd.incrementProgressBy(values[0]);
}
@Override
protected void onPostExecute(Boolean result) {
pd.dismiss();
Toast.makeText(activity, "Processing Done & your ID : " + ID,
Toast.LENGTH_LONG + Toast.LENGTH_LONG).show();
}
/**
* Segment cropped image into number
*/
public void segmentNumbers() {
int count = 0, endOfNumber = 0, startOfNumber = 0;
int[][] number = null;
while (crop.getxProjection()[endOfNumber] == 0
&& endOfNumber != crop.getxProjection().length - 1)
endOfNumber++;
while (endOfNumber != croppedID.length - 1) {
endOfNumber = startOfNumber;
while (crop.getxProjection()[endOfNumber] != 0
&& endOfNumber != crop.getxProjection().length - 1)
endOfNumber++;
if (endOfNumber - startOfNumber < 10) {
startOfNumber = endOfNumber;
while (crop.getxProjection()[startOfNumber] == 0
&& endOfNumber != crop.getxProjection().length - 1)
startOfNumber++;
continue;
}
if (startOfNumber >= croppedID.length
|| endOfNumber >= croppedID.length)
break;
number = new int[endOfNumber - startOfNumber - 1][croppedID[0].length];
for (int i = 0; i < number.length; i++)
for (int j = 0; j < number[i].length; j++)
number[i][j] = croppedID[i + startOfNumber][j];
number = verticalProjectionForNumber(number);
File numberFile = AndroidImage.save(activity,
AndroidImage.write2DIntoImage(number),
Integer.toString(count));
// Image image = ImageFactory.getImage(numberFile.getAbsoluteFile());
// ID += network.recognize(image);
//
// file.getPath() + File.separator + Integer.toString(count) +
// ".PNG");
publishProgress(7);
startOfNumber = endOfNumber;
while (crop.getxProjection()[startOfNumber] == 0
&& endOfNumber != crop.getxProjection().length - 1)
startOfNumber++;
count++;
}
Log.d("ID", ID);
}
/**
* Do vertical projection on each number
*/
private int[][] verticalProjectionForNumber(int[][] number) {
int[] projection = new int[number[0].length];
for (int i = 0; i < (number[0].length * 0.90); i++) {
for (int j = 0; j < number.length; j++) {
projection[i] += number[j][i];
}
}
int first = 0;
while (projection[first] == 0)
first++;
int last = projection.length - 1;
while (projection[last] == 0)
last--;
int[][] modifiedNumber = new int[number.length][last - first];
for (int i = 0; i < modifiedNumber.length; i++)
for (int j = 0; j < modifiedNumber[i].length; j++)
modifiedNumber[i][j] = number[i][j + first];
number = null;
projection = null;
System.gc();
return modifiedNumber;
}
}
我从这里打电话给任务： -
OnClickListener processOnClickListener = new OnClickListener() {
public void onClick(View v) {
try {
createProgressDialog();
pd.show();
new Segement(PreviewActivity.this, pd).execute(path);
} catch (IOException e) {
}
}
};
答案 0 :(得分：3)
夏威夷上面的回答是正确的。
更具体地说，doInBackground方法不与UI线程同步。因此，您永远不应该在此方法中更新您的视图/布局/任何与UI相关的内容。我建议您在show()执行之前AsyncTask对话。
答案 1 :(得分：0)
在执行任务之前，您应该show() Dialog AsyncTask。
在OnProgressUpdate中，您只能使用onPostExecute和UI方法更新createProgressDialog();
pd.show();
task.execute();
。
private void createProgressDialog() {
pd = new ProgressDialog(YourMainActivity.this);
pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
pd.setTitle("Extract ID");
pd.setMessage("Processing...");
pd.setIcon(R.drawable.ic_launcher);
pd.setProgress(0);
pd.setCancelable(false);
}
将您的方法更改为
{{1}}