基本上是一个java开发人员,但现在正在开发一个Android应用程序。在我的应用程序中,当我点击“登录”按钮时,我无法重定向到下一页,这里是我的代码
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.View;
import android.widget.Button;
public class MainActivity extends ActionBarActivity implements View.OnClickListener {
Button log,sign;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.login);
log = (Button) findViewById(R.id.login);
sign = (Button) findViewById(R.id.signup);
log.setOnClickListener(this);
sign.setOnClickListener(this);
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch(v.getId()) {
case R.id.login:
break;
case R.id.signup:
Intent open = new Intent("com.example.eblood.Register");
startActivity(open);
break;
}
}
}
}
这是我的下一页java代码
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class Register extends Activity{
Button backlog,regg;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.register);
backlog = (Button) findViewById(R.id.linktologin);
regg = (Button) findViewById(R.id.register);
backlog.setOnClickListener((OnClickListener) this);
}
public void onClick (View v)
{
switch(v.getId()) {
case R.id.register:
break;
case R.id.linktologin:
Intent in = new Intent("com.example.eblood.MainActivity");
startActivity(in);
break;
}
}
}
这是我的清单代码。
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.eblood"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="19" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.eblood.home"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.example.eblood.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="com.example.eblood.MAINACTIVITY" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name="com.example.eblood.Register"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.REGISTER" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</application>
并且得到的错误是android.content.ActivityNotFoundException:找不到处理Intent的活动{act = com.example.eblood.Register}
这是我的home.java
package com.example.eblood;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
public class home extends Activity {
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.fragment_main);
Thread timer = new Thread(){
public void run(){
try{
sleep(2000);
} catch (InterruptedException e){
e.printStackTrace();
} finally {
Intent openMainActivity = new Intent("com.example.eblood.MAINACTIVITY");
startActivity(openMainActivity);
}
}
};
timer.start();}{
}
}
答案 0 :(得分:0)
试试这个..
如果您使用Intent open = new Intent("com.example.eblood.Register");
,我会ActivityNotFoundException
将其更改为Intent open = new Intent(MainActivity.this,Register.class);
更改此
Intent open = new Intent("com.example.eblood.Register");
startActivity(open);
到
Intent open = new Intent(MainActivity.this,Register.class);
startActivity(open);
也
更改此
Intent in = new Intent("com.example.eblood.MainActivity");
startActivity(in);
到
Intent in = new Intent(Register.this,MainActivity.class);
startActivity(in);
修改强>
改变这一点。
Intent openMainActivity = new Intent("com.example.eblood.MAINACTIVITY");
startActivity(openMainActivity);
到
Intent openMainActivity = new Intent(home.this,MainActivity.class);
startActivity(openMainActivity);