我在Android Studio中创建了一个动画应用。当我模拟它时，IDE不会显示任何错误消息。但是，当我单击程序中的按钮时，它会显示一条消息： “不幸的是应用程序停止了”。 请帮我找错。以下是相关的代码块：
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.Button;
import android.widget.ImageView;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~
final Animation animTranslate = AnimationUtils.loadAnimation(this,R.anim.anim_translate);
final ImageView imgTranslate = (ImageView) findViewById(R.id.imgTranslate);
Button bounceBallButton = (Button) findViewById(R.id.bounceBallButton);
bounceBallButton.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v)
{
//v.startAnimation(animTranslate);
imgTranslate.startAnimation(animTranslate);
}
});
}
}
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ anim_translate.xml
<?xml version="1.0" encoding="utf-8"?>
<translate
android:fromXDelta="0"
android:toXDelta="1000"
android:fromYDelta="0"
android:toYDelta="1500"
android:duration="500"
android:repeatCount="infinite"
android:repeatMode="reverse"
xmlns:android="http://schemas.android.com/apk/res/android">
</translate>
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ activity_main.xml中
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
xmlns:tools="http://schemas.android.com/tools"
android:orientation="vertical">
<Button
android:id="@+id/bounceBallButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/bounce_ball"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<ImageView
android:id="@+id/imageTranslate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:src="@drawable/ball_shape"
tools:layout_editor_absoluteX="16dp"
tools:layout_editor_absoluteY="46dp" />
</RelativeLayout>
我使用Debug运行应用程序后添加了LogCat windowa的内容：
07-05 21:14:25.167 2433-2433/? I/art: Not late-enabling -Xcheck:jni (already on)
07-05 21:14:25.181 2433-2438/? I/art: Debugger is no longer active
07-05 21:14:25.214 2433-2433/? W/ActivityThread: Application com.example.easypc.myballanimation is waiting for the debugger on port 8100...
07-05 21:14:25.216 2433-2433/? I/System.out: Sending WAIT chunk
07-05 21:14:26.412 2433-2438/com.example.easypc.myballanimation I/art: Debugger is active
07-05 21:14:26.421 2433-2433/com.example.easypc.myballanimation I/System.out: Debugger has connected
07-05 21:14:26.422 2433-2433/com.example.easypc.myballanimation I/System.out: waiting for debugger to settle...
07-05 21:14:26.622 2433-2433/com.example.easypc.myballanimation I/System.out: waiting for debugger to settle...
07-05 21:14:26.823 2433-2433/com.example.easypc.myballanimation I/System.out: waiting for debugger to settle...
07-05 21:14:27.024 2433-2433/com.example.easypc.myballanimation I/System.out: waiting for debugger to settle...
07-05 21:14:27.225 2433-2433/com.example.easypc.myballanimation I/System.out: waiting for debugger to settle...
07-05 21:14:27.426 2433-2433/com.example.easypc.myballanimation I/System.out: waiting for debugger to settle...
07-05 21:14:27.627 2433-2433/com.example.easypc.myballanimation I/System.out: waiting for debugger to settle...
07-05 21:14:27.828 2433-2433/com.example.easypc.myballanimation I/System.out: debugger has settled (1322)
07-05 21:14:27.833 2433-2433/com.example.easypc.myballanimation W/System: ClassLoader referenced unknown path: /data/app/com.example.easypc.myballanimation-1/lib/x86_64
07-05 21:14:27.863 2433-2518/com.example.easypc.myballanimation D/OpenGLRenderer: Use EGL_SWAP_BEHAVIOR_PRESERVED: true
[ 07-05 21:14:27.866 2433: 2433 D/ ]
HostConnection::get() New Host Connection established 0x7f81376e1080, tid 2433
[ 07-05 21:14:27.867 2433: 2433 W/ ]
Unrecognized GLES max version string in extensions: ANDROID_EMU_CHECKSUM_HELPER_v1 ANDROID_EMU_dma_v1
[ 07-05 21:14:27.897 2433: 2518 D/ ]
HostConnection::get() New Host Connection established 0x7f813b051360, tid 2518
[ 07-05 21:14:27.898 2433: 2518 W/ ]
Unrecognized GLES max version string in extensions: ANDROID_EMU_CHECKSUM_HELPER_v1 ANDROID_EMU_dma_v1
07-05 21:14:27.900 2433-2518/com.example.easypc.myballanimation I/OpenGLRenderer: Initialized EGL, version 1.4
07-05 21:14:27.900 2433-2518/com.example.easypc.myballanimation W/OpenGLRenderer: Failed to choose config with EGL_SWAP_BEHAVIOR_PRESERVED, retrying without...
07-05 21:14:27.908 2433-2518/com.example.easypc.myballanimation D/EGL_emulation: eglCreateContext: 0x7f813b061820: maj 2 min 0 rcv 2
07-05 21:14:27.912 2433-2518/com.example.easypc.myballanimation D/EGL_emulation: eglMakeCurrent: 0x7f813b061820: ver 2 0 (tinfo 0x7f813b042860)
07-05 21:14:27.938 2433-2518/com.example.easypc.myballanimation D/EGL_emulation: eglMakeCurrent: 0x7f813b061820: ver 2 0 (tinfo 0x7f813b042860)