小贝子编程

安卓应用程序.应用程序运行非常缓慢并导致错误



我最近刚在学校开设了一门安卓开发课程，想知道为什么我的代码不起作用？任何帮助将不胜感激。我正在创建一个小费跟踪器应用程序，以帮助我在提供比萨饼时跟踪我的小费。我知道创建了一个类似的应用程序，但我想创建自己的应用程序，这也是我本学期的期末项目。现在，我只是尝试在窗口之间导航，以确保我可以将所有内容链接在一起，然后再在UI上过于疯狂。我没有看到我实际有问题的地方，但是在单击主屏幕上的"交付"按钮时，我收到错误"不幸的是，[应用程序]已停止工作"。所以我的第二个窗口实际上从未出现过。此外，我的应用程序有时非常慢且无响应。感谢任何可以提供帮助的人。我的代码如下：

<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dip"
android:layout_weight="1"
android:gravity="center|bottom"
android:orientation="vertical">
<Button
android:layout_width="155dp"
android:layout_height="60dp"
android:layout_gravity="center_horizontal|center"
android:layout_marginBottom="10dp"
android:background="@drawable/button_bg"
android:text="Delivery"
android:id="@+id/deliveryButton" />
<Button
android:layout_width="155dp"
android:layout_height="60dp"
android:layout_gravity="center_horizontal|center"
android:layout_marginBottom="10dp"
android:background="@drawable/button_bg"
android:text="LOG"
android:id="@+id/logButton" />
<Button
android:layout_width="155dp"
android:layout_height="60dp"
android:layout_gravity="center_horizontal|center"
android:layout_marginBottom="10dp"
android:background="@drawable/button_bg"
android:text="MAPS"
android:id="@+id/mapsButton" />

我的主 java 文件的代码是：

public class MainActivity extends AppCompatActivity {
private Button launchDeliveryActivity;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
launchDeliveryActivity = (Button) findViewById(R.id.deliveryButton);
launchDeliveryActivity.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View view)
{
launchActivity();
}
});
}
private void launchActivity()
{
Intent intent = new Intent(this, orderDetailsActivity.class);
startActivity(intent);
}

我的第二个窗口是我快速拼凑在一起的东西，以确保我能够从主屏幕导航到第二个窗口并返回：

<?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:background="@drawable/order_details"
android:orientation="vertical">
<Button
android:layout_width="120dp"
android:layout_height="60dp"
android:text="Home"
android:id="@+id/homeScreenButton" />
</LinearLayout>

最后，我的第二个java文件：

public class orderDetailsActivity extends AppCompatActivity {
private Button homeScreen;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.order_details);
homeScreen = (Button) findViewById(R.id.homeScreenButton);
homeScreen.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View view)
{
finish();
}
});
}

日志是：

1：29 AM 执行任务： [：app：assembleDebug]

1：29 AM Gradle 构建在 1s 781ms 内完成

1：31 AM 执行任务： [：app：assembleDebug]

1：31 AM Gradle 构建在 7 秒 15 毫秒内完成

凌晨 1：31 即时运行执行了完整构建和安装，因为设备上的安装与磁盘上的本地构建不匹配。(不再显示)

凌晨 1：40 执行任务：[：应用：组装调试]

1：40 AM Gradle 构建在 1s 203ms 内完成

凌晨 1：43 执行任务： [：app：组装调试]

1：43 AM Gradle 构建在 983ms 内完成

编辑： 日志猫是：

03-27 03:37:59.550 31525-31525/com.example.boley.personaldeliveryassistant E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.boley.personaldeliveryassistant, PID: 31525
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.boley.personaldeliveryassistant/com.example.boley.personaldeliveryassistant.orderDetailsActivity}: android.view.InflateException: Binary XML file line #2: Binary XML file line #2: Error inflating class <unknown>
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3253)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3349)
at android.app.ActivityThread.access$1100(ActivityThread.java:221)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:158)
at android.app.ActivityThread.main(ActivityThread.java:7224)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
Caused by: android.view.InflateException: Binary XML file line #2: Binary XML file line #2: Error inflating class <unknown>
at android.view.LayoutInflater.inflate(LayoutInflater.java:551)
at android.view.LayoutInflater.inflate(LayoutInflater.java:429)
at android.view.LayoutInflater.inflate(LayoutInflater.java:380)
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:280)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:140)
at com.example.boley.personaldeliveryassistant.orderDetailsActivity.onCreate(orderDetailsActivity.java:15)
at android.app.Activity.performCreate(Activity.java:6876)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1135)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3206)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3349) 
at android.app.ActivityThread.access$1100(ActivityThread.java:221) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:158) 
at android.app.ActivityThread.main(ActivityThread.java:7224) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120) 
Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class <unknown>
at android.view.LayoutInflater.createView(LayoutInflater.java:657)
at com.android.internal.policy.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:58)
at android.view.LayoutInflater.onCreateView(LayoutInflater.java:706)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:774)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:716)
at android.view.LayoutInflater.inflate(LayoutInflater.java:498)
at android.view.LayoutInflater.inflate(LayoutInflater.java:429) 
at android.view.LayoutInflater.inflate(LayoutInflater.java:380) 
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:280) 
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:140) 
at com.example.boley.personaldeliveryassistant.orderDetailsActivity.onCreate(orderDetailsActivity.java:15) 
at android.app.Activity.performCreate(Activity.java:6876) 
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1135) 
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3206) 
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3349) 
at android.app.ActivityThread.access$1100(ActivityThread.java:221) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:158) 
at android.app.ActivityThread.main(ActivityThread.java:7224) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120) 
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Constructor.newInstance(Native Method)
at android.view.LayoutInflater.createView(LayoutInflater.java:631)
at com.android.internal.policy.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:58) 
at android.view.LayoutInflater.onCreateView(LayoutInflater.java:706) 
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:774) 
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:716) 
at android.view.LayoutInflater.inflate(LayoutInflater.java:498) 
at android.view.LayoutInflater.inflate(LayoutInflater.java:429) 
at android.view.LayoutInflater.inflate(LayoutInflater.java:380) 
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:280) 
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:140) 
at com.example.boley.personaldeliveryassistant.orderDetailsActivity.onCreate(orderDetailsActivity.java:15) 
at android.app.Activity.performCreate(Activity.java:6876) 
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1135) 
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3206) 
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3349) 
at android.app.ActivityThread.access$1100(ActivityThread.java:221) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:158) 
at android.app.ActivityThread.main(ActivityThread.java:7224) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120) 
Caused by: java.lang.OutOfMemoryError: Failed to allocate a 207355916 byte allocation with 16773008 free bytes and 53MB until OOM
at dalvik.system.VMRuntime.newNonMovableArray(Native Method)
at android.graphics.BitmapFactory.nativeDecodeAsset(Native Method)
at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:856)
at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:675)
at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:2228)
at android.content.res.Resources.loadDrawableForCookie(Resources.java:4215)
at android.content.res.Resources.loadDrawable(Resources.java:4089)
at android.content.res.Resources.loadDrawable(Resources.java:3939)
at android.content.res.TypedArray.getDrawable(TypedArray.java:886)
at android.view.View.<init>(View.java:4230)
at android.view.ViewGroup.<init>(ViewGroup.java:589)
at android.widget.LinearLayout.<init>(LinearLayout.java:202)
at android.widget.LinearLayout.<init>(LinearLayout.java:198)
at android.widget.LinearLayout.<init>(LinearLayout.java:194)
at java.lang.reflect.Constructor.newInstance(Native Method) 
at android.view.LayoutInflater.createView(LayoutInflater.java:631) 
at com.android.internal.policy.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:58) 
at android.view.LayoutInflater.onCreateView(LayoutInflater.java:706) 
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:774) 
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:716) 
at android.view.LayoutInflater.inflate(LayoutInflater.java:498) 
at android.view.LayoutInflater.inflate(LayoutInflater.java:429) 
at android.view.LayoutInflater.inflate(LayoutInflater.java:380) 
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:280) 
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:140) 
at com.example.boley.personaldeliveryassistant.orderDetailsActivity.onCreate(orderDetailsActivity.java:15) 
at android.app.Activity.performCreate(Activity.java:6876) 
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1135) 
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3206) 
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3349) 
at android.app.ActivityThread.access$1100(ActivityThread.java:221) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:158) 
at android.app.ActivityThread.main(ActivityThread.java:7224) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)

ANR的嫌疑人是可绘制的"order_details"。因为您的第二个活动中没有其他组件。请检查可绘制"order_details"的大小。如果它很大，那么这可能是ANR的原因。尝试更改可绘制对象或删除它。

请检查设备的日志，它将带有"I_am anr"标签。日志中可能有一些关于 anr 的信息。

我认为错误是由以下原因引起的：java.lang.OutOfMemory错误：无法分配207355916字节分配，日志中显示16773008个可用字节和53MB，因此首先从order_details线性布局中删除图像并检查，如果要使用此图像，请减小大小并设置运行时检查此图像

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