Question

这是我的登录活动课，我想在登录后登录它显示地图但是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 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);
                }
            });
        }

}

loginsuccess.java

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();
    }
}

This the werror code which is shown in log cat

的manifest.xml

<?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>

second.xml

<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>

login.xml

<?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>

Answer 1

从

改变

<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>

到

<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" >
</TextView>

    <fragment
        android:id="@+id/map"
        android:name="com.google.android.gms.maps.MapFragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

这是因为你的＆lt; / TextView的＆GT;在片段类之后关闭，所以你得到了这个错误。

此处也改变

 startActivity(new Intent(LoginActivity.this,LoginSuccess.class).putExtra("usr",strUsername));

以及 LoginSuccess 活动

        Intent in = getIntent();
        if (in.getStringExtra("usr") != null) {
            final TextView setmsg = (TextView)findViewById(R.id.showmsg);
            setmsg.setText("Welcome \n "+in.getStringExtra("usr"));               
        }

这意味着您必须在清单文件中声明此部分......

<uses-feature android:glEsVersion="0x00020000" android:required="true/>

并且必须使用最新更新的Google Play服务。

不幸的是我的应用已停止工作

1 个答案: