java - Android 应用程序因图像而崩溃

Question

我对 Android 还很陌生。我正在编写一个程序来更改按钮单击时的图像。没有图像，我的应用程序可以完美运行。但对于图像，应用程序会崩溃。

img 的大小 - 4kb，尺寸为 80 X 80。

我的代码-

 protected void clickMe(View view){
    EditText phone = (EditText) findViewById(R.id.phone);
    EditText name = (EditText) findViewById(R.id.name);

    ImageView img = (ImageView) findViewById(R.id.img1);
    img.setImageResource(R.drawable.x);

    Toast.makeText(getApplicationContext(), "yo dudE "+name.getText().toString(), Toast.LENGTH_LONG).show();

    Log.i("Phone : ", phone.getText().toString());

}

堆栈跟踪:

07-04 11:06:04.964 10037-10037/com.satyakisanyal.myfirstandroidproject E/AndroidRuntime: FATAL EXCEPTION: main Process: com.satyakisanyal.myfirstandroidproject, PID: 10037 java.lang.IllegalStateException: Could not execute method for android:onClick at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:293) at android.view.View.performClick(View.java:5198) at android.view.View$PerformClick.run(View.java:21147) at android.os.Handler.handleCallback(Handler.java:739) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:148) at android.app.ActivityThread.main(ActivityThread.java:5417) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) Caused by: java.lang.reflect.InvocationTargetException at java.lang.reflect.Method.invoke(Native Method) at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288) at android.view.View.performClick(View.java:5198)  at android.view.View$PerformClick.run(View.java:21147)  at android.os.Handler.handleCallback(Handler.java:739)  at android.os.Handler.dispatchMessage(Handler.java:95)  at android.os.Looper.loop(Looper.java:148)  at android.app.ActivityThread.main(ActivityThread.java:5417)  at java.lang.reflect.Method.invoke(Native Method)  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)  Caused by: java.lang.ClassCastException: android.widget.RelativeLayout cannot be cast to android.widget.ImageView at com.satyakisanyal.myfirstandroidproject.MainActivity.clickMe(MainActivity.java:22) at java.lang.reflect.Method.invoke(Native Method)  at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:288)  at android.view.View.performClick(View.java:5198)  at android.view.View$PerformClick.run(View.java:21147)  at android.os.Handler.handleCallback(Handler.java:739)  at android.os.Handler.dispatchMessage(Handler.java:95)  at android.os.Looper.loop(Looper.java:148)  at android.app.ActivityThread.main(ActivityThread.java:5417)  at java.lang.reflect.Method.invoke(Native Method)  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

Answer 1

我希望您在 android 中将 RelativeLayout 转换为 ImageView。检查xml文件中的R.id.img1是什么？