package br.com.android;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.widget.*;
public class AppImagem extends Activity {
ImageView imagem;
TextView txt;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_app_imagem);
Button btfoto1 = (Button) findViewById(R.id.btimagem1);
Button btfoto2 = (Button) findViewById(R.id.btimagem2);
imagem = (ImageView) findViewById(R.id.imagem);
txt = (TextView) findViewById(R.id.txtinfo);
btfoto1.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
imagem.setImageResource(R.drawable.foto1);
txt.setText("foto 1");
}
});
btfoto2.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
imagem.setImageResource(R.drawable.foto2);
txt.setText("foto 2");
}
});
}
}
porém ele não roda no emulador e não apresenta nenhum erro na tela de console, diz que instalou o apk normal no emulador.
E quando eu tiro a parte do código referente aos eventos dos botões ele roda sem erros.
Segue abaixo a tela de log
Desculpe não sei se ela ajuda ou atrapalha deixando o post muito garnde, rsrs...
[code]
08-21 00:22:57.602: W/dalvikvm(642): threadid=1: thread exiting with uncaught exception (group=0x409c01f8)
08-21 00:22:57.644: E/AndroidRuntime(642): FATAL EXCEPTION: main
08-21 00:22:57.644: E/AndroidRuntime(642): java.lang.RuntimeException: Unable to start activity ComponentInfo{br.com.android/br.com.android.AppImagem}: java.lang.ClassCastException: android.widget.LinearLayout cannot be cast to android.widget.ImageView
08-21 00:22:57.644: E/AndroidRuntime(642): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1956)
08-21 00:22:57.644: E/AndroidRuntime(642): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
08-21 00:22:57.644: E/AndroidRuntime(642): at android.app.ActivityThread.access$600(ActivityThread.java:123)
08-21 00:22:57.644: E/AndroidRuntime(642): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
08-21 00:22:57.644: E/AndroidRuntime(642): at android.os.Handler.dispatchMessage(Handler.java:99)
08-21 00:22:57.644: E/AndroidRuntime(642): at android.os.Looper.loop(Looper.java:137)
08-21 00:22:57.644: E/AndroidRuntime(642): at android.app.ActivityThread.main(ActivityThread.java:4424)
08-21 00:22:57.644: E/AndroidRuntime(642): at java.lang.reflect.Method.invokeNative(Native Method)
08-21 00:22:57.644: E/AndroidRuntime(642): at java.lang.reflect.Method.invoke(Method.java:511)
08-21 00:22:57.644: E/AndroidRuntime(642): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
08-21 00:22:57.644: E/AndroidRuntime(642): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
08-21 00:22:57.644: E/AndroidRuntime(642): at dalvik.system.NativeStart.main(Native Method)
08-21 00:22:57.644: E/AndroidRuntime(642): Caused by: java.lang.ClassCastException: android.widget.LinearLayout cannot be cast to android.widget.ImageView
08-21 00:22:57.644: E/AndroidRuntime(642): at br.com.android.AppImagem.onCreate(AppImagem.java:20)
08-21 00:22:57.644: E/AndroidRuntime(642): at android.app.Activity.performCreate(Activity.java:4465)
08-21 00:22:57.644: E/AndroidRuntime(642): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
08-21 00:22:57.644: E/AndroidRuntime(642): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920)
08-21 00:22:57.644: E/AndroidRuntime(642): ... 11 more
[code]