我正在尝试创建一个应用程序,当点击一个按钮并且数据来自表单时,该应用程序会将一些数据发送到Web服务器。数据类型是名字,姓氏等。我是一名初学者,并尝试使用OKHTTPFClient插件从应用程序发送HTTP请求。 我需要的是点击表单数据将被发送到PHP然后PHP将给出成功响应,然后应用程序获取,然后活动将被重定向到感谢您的活动。这是我现在正在尝试的代码 -
submitRequest.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
if ( firstName.getText().toString().length() == 0 ) {
firstName.setError("Please enter your first name!");
}
if ( firstName.getText().toString().length() != 0 ) {
Toast.makeText(getApplicationContext(), firstName.getText().toString(), Toast.LENGTH_SHORT).show();
requestHTTP(firstName.getText().toString());
} else {
}
}
});
这是OKHTTPClient的方法 -
private void requestHTTP(String first_name) {
OkHttpClient httpClient = new OkHttpClient();
String url = "https://www.example.com/action.php";
RequestBody formBody = new FormBody.Builder()
.add("first_name", first_name)
.build();
Request request = new Request.Builder()
.url(url)
.post(formBody)
.build();
Response response = null;
try {
response = httpClient.newCall(request).execute();
if (response.isSuccessful()) {
Toast.makeText(getApplicationContext(), firstName.getText().toString(), Toast.LENGTH_SHORT).show();
}
} catch (IOException e) {
}
}
更新:
以下是Android Run部分显示的错误 -
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.androidapp, PID: 11592
android.os.NetworkOnMainThreadException
at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1303)
at java.net.Inet6AddressImpl.lookupHostByName(Inet6AddressImpl.java:86)
at java.net.Inet6AddressImpl.lookupAllHostAddr(Inet6AddressImpl.java:74)
at java.net.InetAddress.getAllByName(InetAddress.java:752)
at okhttp3.Dns$1.lookup(Dns.java:39)
at okhttp3.internal.connection.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:185)
at okhttp3.internal.connection.RouteSelector.nextProxy(RouteSelector.java:149)
at okhttp3.internal.connection.RouteSelector.next(RouteSelector.java:84)
at okhttp3.internal.connection.StreamAllocation.findConnection(StreamAllocation.java:213)
at okhttp3.internal.connection.StreamAllocation.findHealthyConnection(StreamAllocation.java:134)
at okhttp3.internal.connection.StreamAllocation.newStream(StreamAllocation.java:113)
at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:42)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:125)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:200)
at okhttp3.RealCall.execute(RealCall.java:77)
at org.goldenfs.payoffcalculator.advisor.requestHTTP(advisor.java:220)
at org.goldenfs.payoffcalculator.advisor.access$000(advisor.java:38)
at org.goldenfs.payoffcalculator.advisor$4.onClick(advisor.java:188)
at android.view.View.performClick(View.java:6261)
at android.widget.TextView.performClick(TextView.java:11180)
at android.view.View$PerformClick.run(View.java:23748)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6776)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1520)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1410)
申请已终止。
请帮我解决这个问题。我非常感谢你的帮助...... :)
答案 0 :(得分:2)
它会抛出错误,因为您尝试在MainThread上执行网络操作,这是不应该的。请添加以下行并尝试
public void onViewCreated(View view, Bundle savedInstanceState)
{
int SDK_INT = android.os.Build.VERSION.SDK_INT;
if (SDK_INT > 8)
{
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder()
.permitAll().build();
StrictMode.setThreadPolicy(policy);
//your codes here
}
}
或强>
您可以在AsyncTask
中调用不在MainThread上运行的方法。
private class YourAsyncTaskName extends AsyncTask<String, Void, String> {
String data;
public YourAsyncTaskName(String data){
this.data= data;
}
@Override
protected String doInBackground(String... params) {
requestHTTP(data);
return null;
}
@Override
protected void onPostExecute(String result) {
}
@Override
protected void onPreExecute() {
}
@Override
protected void onProgressUpdate(Void... values) {
}
}
现在执行你的AsyncTask
submitRequest.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
if ( firstName.getText().toString().length() == 0 ) {
firstName.setError("Please enter your first name!");
}
if ( firstName.getText().toString().length() != 0 ) {
Toast.makeText(getApplicationContext(), firstName.getText().toString(), Toast.LENGTH_SHORT).show();
new YourAsyncTaskName(firstName.getText().toString()).execute();
} else {
}
}
});
答案 1 :(得分:2)
android.os.NetworkOnMainThreadException 在android.os.StrictMode $ AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1303)
您应该使用 THREAD
。
//A thread is a thread of execution in a program.
// The Java Virtual Machine allows an application to have multiple threads of execution running concurrently.
Thread thread = new Thread(new Runnable() {
@Override
public void run() {
try
{
OkHttpClient httpClient = new OkHttpClient();
String url = "https://www.example.com/action.php";
RequestBody formBody = new FormBody.Builder()
.add("first_name", first_name)
.build();
Request request = new Request.Builder()
.url(url)
.post(formBody)
.build();
Response response = null;
try {
response = httpClient.newCall(request).execute();
if (response.isSuccessful()) {
Toast.makeText(getApplicationContext(), firstName.getText().toString(), Toast.LENGTH_SHORT).show();
}
} catch (IOException e) {
}
} catch (Exception e) {
e.printStackTrace();
}
}
});
thread.start();
来自OkHttp
。