나는 초보자에 안드로이드, 내가 그것을 콘솔에서 오류를 제공하지 않습니다, 내 안드로이드 응용 프로그램을 실행하려고하지만 난 내가 건배의 MSG를 얻을 에뮬레이터에서 응용 프로그램 열 휴대 전화에 설치되어 있지 않은 응용 프로그램을 같은 쿼리를 . 이 포럼에 물어, 그들이 말하는 당신이 당신의 MainActivity 당신의 AndroidManifest.xml에 두 번 선언 한 경우가 발생할 수 있습니다, 그 시도하지만하지 않습니다
AndroidManifest.xml
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.intent"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="15" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".Activity1"
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=".Activity2"
android:label="@string/app_name">
</activity>
</application>
</manifest>
활동 1
package com.example.intent;
import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class Activity1 extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_activity1);
addListenerOnButton();
}
public void addListenerOnButton() {
final Context context = this;
Button b1=(Button)findViewById(R.id.textView1);
b1.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent(context,Activity2.class);
startActivity(intent);
}
});
}
}
Activity2.java
package com.example.intent;
import android.app.Activity;
import android.os.Bundle;
public class Activity2 extends Activity{
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_activity2);
}
}
activity_activity1.xml-> Activity1.java
<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="252dp"
android:layout_height="40dp"
android:layout_gravity="center_horizontal"
android:text="@string/t1"
android:textAppearance="?android:attr/textAppearanceLarge" />
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/intent"/>
</LinearLayout>
activity_activity2.xml-> Activity2.java
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/t2"
/>
</LinearLayout>
String.xml
<resources>
<string name="app_name">Intent</string>
<string name="intent">Click me to Another Screen</string>
<string name="t1">I am Screen 1!</string>
<string name="t2">I am Screen 2!</string>
<string name="hello_world">Hello world!</string>
<string name="menu_settings">Settings</string>
<string name="title_activity_activity1">Activity1</string>
</resources>
LogCat
09-07 17:10:01.281: D/AndroidRuntime(756): Shutting down VM
09-07 17:10:01.291: W/dalvikvm(756): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
09-07 17:10:01.301: E/AndroidRuntime(756): FATAL EXCEPTION: main
09-07 17:10:01.301: E/AndroidRuntime(756): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.intent/com.example.intent.Activity1}: java.lang.ClassCastException: android.widget.TextView
09-07 17:10:01.301: E/AndroidRuntime(756): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
09-07 17:10:01.301: E/AndroidRuntime(756): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
09-07 17:10:01.301: E/AndroidRuntime(756): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
09-07 17:10:01.301: E/AndroidRuntime(756): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
09-07 17:10:01.301: E/AndroidRuntime(756): at android.os.Handler.dispatchMessage(Handler.java:99)
09-07 17:10:01.301: E/AndroidRuntime(756): at android.os.Looper.loop(Looper.java:123)
09-07 17:10:01.301: E/AndroidRuntime(756): at android.app.ActivityThread.main(ActivityThread.java:4627)
09-07 17:10:01.301: E/AndroidRuntime(756): at java.lang.reflect.Method.invokeNative(Native Method)
09-07 17:10:01.301: E/AndroidRuntime(756): at java.lang.reflect.Method.invoke(Method.java:521)
09-07 17:10:01.301: E/AndroidRuntime(756): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
09-07 17:10:01.301: E/AndroidRuntime(756): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
09-07 17:10:01.301: E/AndroidRuntime(756): at dalvik.system.NativeStart.main(Native Method)
09-07 17:10:01.301: E/AndroidRuntime(756): Caused by: java.lang.ClassCastException: android.widget.TextView
09-07 17:10:01.301: E/AndroidRuntime(756): at com.example.intent.Activity1.addListenerOnButton(Activity1.java:22)
09-07 17:10:01.301: E/AndroidRuntime(756): at com.example.intent.Activity1.onCreate(Activity1.java:17)
09-07 17:10:01.301: E/AndroidRuntime(756): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
09-07 17:10:01.301: E/AndroidRuntime(756): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
09-07 17:10:01.301: E/AndroidRuntime(756): ... 11 more
09-07 17:10:10.700: I/Process(756): Sending signal. PID: 756 SIG: 9
09-07 17:15:13.781: D/AndroidRuntime(812): Shutting down VM
09-07 17:15:13.781: W/dalvikvm(812): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
09-07 17:15:13.801: E/AndroidRuntime(812): FATAL EXCEPTION: main
09-07 17:15:13.801: E/AndroidRuntime(812): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.intent/com.example.intent.Activity1}: java.lang.ClassCastException: android.widget.TextView
09-07 17:15:13.801: E/AndroidRuntime(812): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
09-07 17:15:13.801: E/AndroidRuntime(812): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
09-07 17:15:13.801: E/AndroidRuntime(812): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
09-07 17:15:13.801: E/AndroidRuntime(812): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
09-07 17:15:13.801: E/AndroidRuntime(812): at android.os.Handler.dispatchMessage(Handler.java:99)
09-07 17:15:13.801: E/AndroidRuntime(812): at android.os.Looper.loop(Looper.java:123)
09-07 17:15:13.801: E/AndroidRuntime(812): at android.app.ActivityThread.main(ActivityThread.java:4627)
09-07 17:15:13.801: E/AndroidRuntime(812): at java.lang.reflect.Method.invokeNative(Native Method)
09-07 17:15:13.801: E/AndroidRuntime(812): at java.lang.reflect.Method.invoke(Method.java:521)
09-07 17:15:13.801: E/AndroidRuntime(812): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
09-07 17:15:13.801: E/AndroidRuntime(812): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
09-07 17:15:13.801: E/AndroidRuntime(812): at dalvik.system.NativeStart.main(Native Method)
09-07 17:15:13.801: E/AndroidRuntime(812): Caused by: java.lang.ClassCastException: android.widget.TextView
09-07 17:15:13.801: E/AndroidRuntime(812): at com.example.intent.Activity1.addListenerOnButton(Activity1.java:22)
09-07 17:15:13.801: E/AndroidRuntime(812): at com.example.intent.Activity1.onCreate(Activity1.java:17)
09-07 17:15:13.801: E/AndroidRuntime(812): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
09-07 17:15:13.801: E/AndroidRuntime(812): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
09-07 17:15:13.801: E/AndroidRuntime(812): ... 11 more
09-07 17:20:13.841: I/Process(812): Sending signal. PID: 812 SIG: 9
09-07 17:24:50.690: D/AndroidRuntime(840): Shutting down VM
09-07 17:24:50.690: W/dalvikvm(840): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
09-07 17:24:50.710: E/AndroidRuntime(840): FATAL EXCEPTION: main
09-07 17:24:50.710: E/AndroidRuntime(840): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.intent/com.example.intent.Activity1}: java.lang.ClassCastException: android.widget.TextView
09-07 17:24:50.710: E/AndroidRuntime(840): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
09-07 17:24:50.710: E/AndroidRuntime(840): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
09-07 17:24:50.710: E/AndroidRuntime(840): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
09-07 17:24:50.710: E/AndroidRuntime(840): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
09-07 17:24:50.710: E/AndroidRuntime(840): at android.os.Handler.dispatchMessage(Handler.java:99)
09-07 17:24:50.710: E/AndroidRuntime(840): at android.os.Looper.loop(Looper.java:123)
09-07 17:24:50.710: E/AndroidRuntime(840): at android.app.ActivityThread.main(ActivityThread.java:4627)
09-07 17:24:50.710: E/AndroidRuntime(840): at java.lang.reflect.Method.invokeNative(Native Method)
09-07 17:24:50.710: E/AndroidRuntime(840): at java.lang.reflect.Method.invoke(Method.java:521)
09-07 17:24:50.710: E/AndroidRuntime(840): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
09-07 17:24:50.710: E/AndroidRuntime(840): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
09-07 17:24:50.710: E/AndroidRuntime(840): at dalvik.system.NativeStart.main(Native Method)
09-07 17:24:50.710: E/AndroidRuntime(840): Caused by: java.lang.ClassCastException: android.widget.TextView
09-07 17:24:50.710: E/AndroidRuntime(840): at com.example.intent.Activity1.addListenerOnButton(Activity1.java:22)
09-07 17:24:50.710: E/AndroidRuntime(840): at com.example.intent.Activity1.onCreate(Activity1.java:17)
09-07 17:24:50.710: E/AndroidRuntime(840): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
09-07 17:24:50.710: E/AndroidRuntime(840): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
09-07 17:24:50.710: E/AndroidRuntime(840): ... 11 more
당신은 그것을 잘못하고 있습니다
Button b1=(Button)findViewById(R.id.textView1);
버튼을 textview로 캐스팅
로 변경
Button b1=(Button)findViewById(R.id.button1);
활동 컨텍스트도 사용
Intent intent = new Intent(Activity1.this,Activity2.class);
이 기사는 인터넷에서 수집됩니다. 재 인쇄 할 때 출처를 알려주십시오.
침해가 발생한 경우 연락 주시기 바랍니다[email protected] 삭제
몇 마디 만하겠습니다