LOGCAT 錯誤:
05-16 07:16:24.503: E/AndroidRuntime(17625): FATAL EXCEPTION: main
05-16 07:16:24.503: E/AndroidRuntime(17625): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.fdc/com.example.fdc.Medical_Record}: java.lang.NullPointerException
05-16 07:16:24.503: E/AndroidRuntime(17625): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1651)
05-16 07:16:24.503: E/AndroidRuntime(17625): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667)
05-16 07:16:24.503: E/AndroidRuntime(17625): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
05-16 07:16:24.503: E/AndroidRuntime(17625): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935)
05-16 07:16:24.503: E/AndroidRuntime(17625): at android.os.Handler.dispatchMessage(Handler.java:99)
05-16 07:16:24.503: E/AndroidRuntime(17625): at android.os.Looper.loop(Looper.java:123)
05-16 07:16:24.503: E/AndroidRuntime(17625): at android.app.ActivityThread.main(ActivityThread.java:3687)
05-16 07:16:24.503: E/AndroidRuntime(17625): at java.lang.reflect.Method.invokeNative(Native Method)
05-16 07:16:24.503: E/AndroidRuntime(17625): at java.lang.reflect.Method.invoke(Method.java:507)
05-16 07:16:24.503: E/AndroidRuntime(17625): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:842)
05-16 07:16:24.503: E/AndroidRuntime(17625): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
05-16 07:16:24.503: E/AndroidRuntime(17625): at dalvik.system.NativeStart.main(Native Method)
05-16 07:16:24.503: E/AndroidRuntime(17625): Caused by: java.lang.NullPointerException
05-16 07:16:24.503: E/AndroidRuntime(17625): at com.example.fdc.Medical_Record.onCreate(Medical_Record.java:84)
05-16 07:16:24.503: E/AndroidRuntime(17625): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
05-16 07:16:24.503: E/AndroidRuntime(17625): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615)
05-16 07:16:24.503: E/AndroidRuntime(17625): ... 11 more
代碼:
package com.example.fdc;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.util.Log;
import android.view.Menu;
import android.widget.TextView;
public class Medical_Record extends Activity{
TextView Record1,
Record2,Record3,
Record4,Record5,Record6
,Record7,Record8,Record9,
Record10,Record11;
String array_record [];
String username ="";
String id="";
String pname="";
String prel="";
String paddress="";
String pno="";
String poffice="";
String pmobile="";
String pbirth="";
String pcomment="";
String pcomplain = "";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_medical__record);
Record1 = (TextView) findViewById(R.id.precord1);
Record2 = (TextView) findViewById(R.id.precord2);
Record3 = (TextView) findViewById(R.id.precord3);
Record4 = (TextView) findViewById(R.id.precord4);
Record5 = (TextView) findViewById(R.id.precord5);
Record6 = (TextView) findViewById(R.id.precord6);
Record7 = (TextView) findViewById(R.id.precord7);
Record8 = (TextView) findViewById(R.id.precord8);
Record9 = (TextView) findViewById(R.id.precord9);
Record10 = (TextView) findViewById(R.id.precord10);
Intent intent=getIntent();
String message =intent.getStringExtra("values");
if(message.contains(","))
{
array_record=message.split(",");
username =array_record[0];
id=array_record[1];
pname=array_record[2];
prel=array_record[3];
paddress=array_record[4];
pno=array_record[5];
poffice=array_record[6];
pmobile=array_record[7];
pbirth=array_record[8];
pcomment=array_record[9];
pcomplain = array_record[10];
Log.d("ijazzzz", prel);
Record1.setText(username);
Record2.setText(id);
Record3.setText(pname);
Record4.setText(prel);
Record5.setText(paddress);
Record6.setText(pno);
Record7.setText(poffice);
Record8.setText(pmobile);
Record9.setText(pbirth);
Record10.setText(pcomment);
Record11.setText(pcomplain);
}
else
{
Log.d("ijazzzz", "sssssssssssssssss");
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.medical__record, menu);
return true;
}
}
調試代碼並沒有錯誤,獲取數據來自HttpPost,並且將長數據分割後存儲在字符串中。
最後在Textview中設置時報錯了。
自己要學會看log,Medical_Record.java:84行報空指針,你的Record11沒有初始化