当它应该按钮没有做任何事情 [英] Button not doing anything when it should
问题描述
MainActivity.java
MainActivity.java
package com.example.mdpmk1;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.TextView;
import android.widget.Toast;
import android.content.Context;
import android.net.wifi.ScanResult;
import android.widget.Button;
import com.google.zxing.integration.android.IntentIntegrator;
import com.google.zxing.integration.android.IntentResult;
public class MainActivity extends Activity {
Button bt, bt2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
bt = (Button) findViewById(R.id.scan);
bt2 = (Button) findViewById(R.id.getResults);
bt.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
// do initiatescan
}
});
bt2.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
Intent intent = new Intent(MainActivity.this, ScanResult.class);
startActivity(intent);
}
});
}
public void onActivityResult(int requestCode, int resultCode, Intent intent)
{
//super.onActivityResult(requestCode, resultCode, intent);
if (requestCode == 0) {
if (resultCode == RESULT_OK) {
} else if (resultCode == RESULT_CANCELED) {
}
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
IntentIntegrator.java
可以发现<一个href=\"https://$c$c.google.com/p/zxing/source/browse/trunk/android-integration/src/com/google/zxing/integration/android/IntentResult.java?r=2260\"相对=nofollow>这里
activity_main.xml中
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/linearLayout1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/appName"
android:textAppearance="?android:attr/textAppearanceLarge" />
<Button
android:id="@+id/scan"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/scanClick" />
<Button
android:id="@+id/getResults"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/getResults" />
</LinearLayout>
Mainfest
Mainfest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.mdpmk1"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="18" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.VIBRATE" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_LOCATION_EXTRA_COMMANDS" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:debuggable="true"
android:name="com.example.mdpmk1.MainActivity"
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=".ScanScreen" />
<activity android:name=".ScanResults" />
</application>
</manifest>
这是在响应Aniruddha谁申请过这份code帮我问问题<一href=\"http://stackoverflow.com/questions/23669615/button-no-longer-does-what-its-suppose-to/23670577?\">HERE如果任何人能告诉我为什么我的按钮2不工作,这将是可爱的感谢。
This is in response to Aniruddha who requested this code to help me with question asked HERE If anyone else could tell me why my button 2 doesnt work that would be lovely thanks.
推荐答案
您有什么
<activity android:name=".ScanResults" />
和使用意图时
Intent intent = new Intent(MainActivity.this, ScanResult.class);
ScanResults
和 ScanResult
是不一样的。
如果没有找到活动,你应该得到 ActivityNotFoundException
。
If Activity is not found you should get ActivityNotFoundException
.
这异常被抛出时,给startActivity(意向)或者一个通话
它的变种,因为一个活动无法找到执行失败
给定的意图。
This exception is thrown when a call to startActivity(Intent) or one of its variants fails because an Activity can not be found to execute the given Intent.
的http://developer.android.com/reference/android/content/ActivityNotFoundException.html
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