Java 不幸的是，我的应用程序已经停止工作
这是我的登录活动类，我想在登录后进行登录，但当我运行应用程序时，它显示不幸停止登录 loginActivity.javaJava 不幸的是，我的应用程序已经停止工作,java,android,android-intent,android-fragments,Java,Android,Android Intent,Android Fragments,这是我的登录活动类，我想在登录后进行登录，但当我运行应用程序时，它显示不幸停止登录 loginActivity.java package com.ivb.login; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import andr
package com.ivb.login;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class LoginActivity extends Activity{
EditText edtemail,edtPassword;
Button btnLogin;
String strUsername,strPassword;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.login);
edtemail = (EditText)this.findViewById(R.id.edt_email);
edtPassword = (EditText)this.findViewById(R.id.edt_passwrd);
btnLogin = (Button)this.findViewById(R.id.btnLogin);
btnLogin.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
strUsername = edtemail.getText().toString().trim();
strPassword = edtPassword.getText().toString().trim();
if(strUsername.equals("needin@gmail.com") && strPassword.equals("needin123"))
startActivity(new Intent(LoginActivity.this,LoginSuccess.class).putExtra("usr",(CharSequence)strUsername));
else
Toast.makeText(LoginActivity.this,"Invalid UserName or Password", Toast.LENGTH_LONG).show();
}
});
TextView registerScreen = (TextView) findViewById(R.id.link_to_register);
// Listening to register new account link
registerScreen.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// Switching to Register screen
Intent i = new Intent(getApplicationContext(), RegisterActivity.class);
startActivity(i);
}
});
}
}
package com.ivb.login;
import javax.security.auth.PrivateCredentialPermission;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.MapFragment;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Window;
import android.widget.TextView;
import android.widget.Toast;
public class LoginSuccess extends Activity {
private GoogleMap googleMap;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.second);
try {
// Loading map
initilizeMap();
} catch (Exception e) {
e.printStackTrace();
}
Intent in = getIntent();
if (in.getCharSequenceExtra("usr") != null) {
final TextView setmsg = (TextView)findViewById(R.id.showmsg);
setmsg.setText("Welcome \n "+in.getCharSequenceExtra("usr"));
}
}
private void initilizeMap() {
if (googleMap == null) {
googleMap =((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
// check if map is created successfully or not
if (googleMap == null) {
Toast.makeText(getApplicationContext(),
"Sorry! unable to create maps", Toast.LENGTH_SHORT)
.show();
}
}
}
@Override
protected void onResume() {
super.onResume();
initilizeMap();
}
}
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.ivb.login"
android:versionCode="1"
android:versionName="1.0" >
<permission
android:name="com.ivb.login.permission.MAPS_RECEIVE"
android:protectionLevel="signature"></permission>
<uses-permission android:name="com.ivb.login.permission.MAPS_RECEIVE"/>
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="18" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-feature
android:glEsVersion="0x00020000"
android:required="true"/>
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.ivb.login.LoginActivity"
android:label="@string/app_name"
android:screenOrientation="sensor">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name="com.ivb.login.RegisterActivity"
android:label="Register New Account"></activity>
<activity android:name="com.ivb.login.LoginSuccess"></activity>
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="AIzaSyC-2jAJ7MEkho_gJv7KLeb-tHrU2zHDUQU" />
<uses-library android:name="com.google.android.maps"/>
</application>
</manifest>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".LoginSuccess" >
<LinearLayout android:id="@+id/header"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="@layout/header_gradient"
android:paddingTop="5dip"
android:paddingBottom="5dip" >
<ImageView android:src="@drawable/logo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dip"/>
</LinearLayout>
<TextView
android:id="@+id/showmsg"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:gravity="center"
android:text="Welcome"
android:textSize="20dip" >
<fragment
android:id="@+id/map"
android:name="com.google.android.gms.maps.MapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</TextView>
</RelativeLayout>
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
android:orientation="vertical" >
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#ffffff" >
<LinearLayout
android:id="@+id/header"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="@layout/header_gradient" >
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@id/header"
android:orientation="vertical"
android:padding="10dip" >
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="10dip"
android:src="@drawable/logo1" />
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Email"
android:textColor="#372c24" />
<EditText
android:id="@+id/edt_email"
android:layout_width="209dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginBottom="20dip"
android:layout_marginTop="5dip"
android:ems="10"
android:hint="Enter Email Address"
android:inputType="textEmailAddress"
android:singleLine="true"
android:typeface="normal" >
<requestFocus />
</EditText>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Password"
android:textColor="#372c24" />
<EditText
android:id="@+id/edt_passwrd"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="5dip"
android:ems="10"
android:hint="Enter password"
android:inputType="textPassword"
android:password="true"
android:singleLine="true"
android:typeface="normal" />
<Button
android:id="@+id/btnLogin"
android:layout_width="133dp"
android:layout_height="32dp"
android:layout_gravity="center"
android:layout_marginTop="10dip"
android:background="#acd28a"
android:clickable="true"
android:gravity="center"
android:paddingLeft="15dip"
android:text="Login" />
<TextView
android:id="@+id/link_to_register"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="40dip"
android:layout_marginTop="40dip"
android:gravity="center"
android:text="Need an account?sign up"
android:textColor="#0b84aa"
android:textSize="20dip" />
</LinearLayout>
</RelativeLayout>
</ScrollView>
<TextView
android:id="@+id/showmsg"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:gravity="center"
android:text="Welcome"
android:textSize="20dip" >
<fragment
android:id="@+id/map"
android:name="com.google.android.gms.maps.MapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</TextView>
Intent in = getIntent();
if (in.getStringExtra("usr") != null) {
final TextView setmsg = (TextView)findViewById(R.id.showmsg);
setmsg.setText("Welcome \n "+in.getStringExtra("usr"));
}
<uses-feature android:glEsVersion="0x00020000" android:required="true/>
您得到的是ClassCastException，您需要发布真实的stacktrace而不是图像，并告诉我们您得到错误的行。当我启动应用程序时，没有错误，当我在登录时放置凭据时，它显示您的应用程序不幸崩溃。发布两个活动的xml文件。首先，发布您的xml布局，然后清理项目并重新测试布局在哪里？你能发布你的第二个布局代码吗？@piyush谢谢它能工作logcat中有一个错误说google map android api V2只支持打开gls 2.o及以上的设备请告诉我这是什么好的必须确保你的应用程序运行的是google api你的目标SDK运行appkk是的我正在使用它运行应用程序google api和target sdk都是18，但您的项目运行正常吗？显示地图？@vaib还必须记住，您的模拟器支持谷歌API。
Intent in = getIntent();
if (in.getStringExtra("usr") != null) {
final TextView setmsg = (TextView)findViewById(R.id.showmsg);
setmsg.setText("Welcome \n "+in.getStringExtra("usr"));
}
<uses-feature android:glEsVersion="0x00020000" android:required="true/>