Emulator 运行 到达特定布局时速度较慢
Emulator run slowly when come to a specific layout
我不知道我的 xml 布局有什么问题。每当它打算 AddMoreClaims activity 时，我的模拟器都会 运行 缓慢并且有时不响应，如下图所示。
这是 logCat 消息
12-09 05:05:59.758 2688-2688/? E/RichInputConnection﹕ Unable to connect to the editor to retrieve text.
12-09 05:05:59.758 2688-2688/? W/RichInputConnection﹕ Unable to connect to the editor. Setting caps mode without knowing text.
12-09 05:05:59.760 2688-2688/? I/Choreographer﹕ Skipped 352 frames! The application may be doing too much work on its main thread.
12-09 05:05:59.783 2688-2710/? W/EGL_emulation﹕ eglSurfaceAttrib not implemented
12-09 05:05:59.784 2688-2710/? W/OpenGLRenderer﹕ Failed to set EGL_SWAP_BEHAVIOR on surface 0xa30bfe80, error=EGL_SUCCESS
12-09 05:06:03.080 2808-2808/? I/Choreographer﹕ Skipped 153 frames! The application may be doing too much work on its main thread.
12-09 05:06:08.163 2808-2808/? I/Choreographer﹕ Skipped 151 frames! The application may be doing too much work on its main thread.
12-09 05:06:10.863 2808-2808/? I/Choreographer﹕ Skipped 161 frames! The application may be doing too much work on its main thread.
xml
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:fillViewport="true"
android:orientation="vertical"
xmlns:android="http://schemas.android.com/apk/res/android">
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@mipmap/dark_blue"
android:weightSum="1">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Enter Claims Information"
android:id="@+id/textViewClaims"
android:paddingTop="30sp"
android:textSize="20dp"
android:paddingLeft="15sp"
android:textColor="@color/white"
android:layout_weight="0.05" />
<View
android:layout_marginLeft="10dp"
android:layout_width="340sp"
android:layout_height="2dp"
android:background="#c0c0c0"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Claims Type : "
android:paddingTop="20sp"
android:paddingLeft="15sp"
android:textSize="17dp"
android:textColor="@color/white"
android:id="@+id/textViewClaimsType"
android:layout_weight="0.05" />
<Spinner
android:layout_width="308dp"
android:layout_marginLeft="10dp"
android:background="@color/light_gray"
android:layout_height="48dp"
android:id="@+id/spinner" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Claims Amount :"
android:paddingTop="20sp"
android:paddingLeft="15sp"
android:textSize="17dp"
android:textColor="@color/white"
android:id="@+id/textViewAmount"
android:layout_weight="0.05" />
<EditText
android:layout_width="308dp"
android:layout_height="wrap_content"
android:layout_margin="10sp"
android:background="@drawable/round_corner_square"
android:id="@+id/editTextAmount"
android:paddingLeft="20dp"
android:layout_weight="0.09" />
<ImageView
android:layout_gravity="center"
android:adjustViewBounds="true"
android:scaleType="fitXY"
android:layout_marginTop="20dp"
android:layout_width="200dp"
android:layout_height="200dp"
android:id="@+id/imageView" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Add picture"
android:id="@+id/button"
android:layout_gravity="center_horizontal"
android:layout_weight="0.05" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Enter Description"
android:paddingTop="30sp"
android:paddingLeft="15sp"
android:textSize="17dp"
android:textColor="@color/white"
android:id="@+id/textView12"
android:layout_weight="0.05" />
<EditText
android:layout_width="308dp"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:background="@drawable/round_corner_square"
android:layout_weight="0.12"
android:paddingLeft="20dp"
android:paddingBottom="80dp"
android:layout_x="14dp"
android:layout_y="146dp"
android:id="@+id/textDescription" />
<Button
android:layout_width="159dp"
android:layout_height="wrap_content"
android:text="save"
android:layout_marginTop="20dp"
android:id="@+id/button1"
android:layout_gravity="center_horizontal"
android:layout_weight="0.05" />
</LinearLayout>
</ScrollView>
为什么会发生这种情况，我该如何解决？谢谢
The application may be doing too much work on its main thread.
Layouts are a key part of Android applications that directly affect
the user experience. If implemented poorly, your layout can lead to a
memory hungry application with slow UIs. The Android SDK includes
tools to help you identify problems in your layout performance, which
when combined the lessons here, you will be able to implement smooth
scrolling interfaces with a minimum memory footprint.
按需加载视图
Beyond simply including one layout component within another layout,
you might want to make the included layout visible only when it's
needed, sometime after the activity is running. This lesson shows how
you can improve your layout's initialization performance by loading
portions of your layout on demand.
错误的概念
<ImageView
android:layout_gravity="center"
android:adjustViewBounds="true"
android:scaleType="fitXY"
android:layout_marginTop="20dp"
android:layout_width="200dp"
android:layout_height="200dp"
android:id="@+id/imageView" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Add picture"
android:id="@+id/button"
android:layout_gravity="center_horizontal"
android:layout_weight="0.05" />
这里你用的是android:layout_weight，嗯。然后另一种情况你设置了Hard coded height & Width，这就是为什么有问题。避免硬编码值。
我不知道我的 xml 布局有什么问题。每当它打算 AddMoreClaims activity 时，我的模拟器都会 运行 缓慢并且有时不响应，如下图所示。
这是 logCat 消息
12-09 05:05:59.758 2688-2688/? E/RichInputConnection﹕ Unable to connect to the editor to retrieve text.
12-09 05:05:59.758 2688-2688/? W/RichInputConnection﹕ Unable to connect to the editor. Setting caps mode without knowing text.
12-09 05:05:59.760 2688-2688/? I/Choreographer﹕ Skipped 352 frames! The application may be doing too much work on its main thread.
12-09 05:05:59.783 2688-2710/? W/EGL_emulation﹕ eglSurfaceAttrib not implemented
12-09 05:05:59.784 2688-2710/? W/OpenGLRenderer﹕ Failed to set EGL_SWAP_BEHAVIOR on surface 0xa30bfe80, error=EGL_SUCCESS
12-09 05:06:03.080 2808-2808/? I/Choreographer﹕ Skipped 153 frames! The application may be doing too much work on its main thread.
12-09 05:06:08.163 2808-2808/? I/Choreographer﹕ Skipped 151 frames! The application may be doing too much work on its main thread.
12-09 05:06:10.863 2808-2808/? I/Choreographer﹕ Skipped 161 frames! The application may be doing too much work on its main thread.
xml
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:fillViewport="true"
android:orientation="vertical"
xmlns:android="http://schemas.android.com/apk/res/android">
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@mipmap/dark_blue"
android:weightSum="1">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Enter Claims Information"
android:id="@+id/textViewClaims"
android:paddingTop="30sp"
android:textSize="20dp"
android:paddingLeft="15sp"
android:textColor="@color/white"
android:layout_weight="0.05" />
<View
android:layout_marginLeft="10dp"
android:layout_width="340sp"
android:layout_height="2dp"
android:background="#c0c0c0"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Claims Type : "
android:paddingTop="20sp"
android:paddingLeft="15sp"
android:textSize="17dp"
android:textColor="@color/white"
android:id="@+id/textViewClaimsType"
android:layout_weight="0.05" />
<Spinner
android:layout_width="308dp"
android:layout_marginLeft="10dp"
android:background="@color/light_gray"
android:layout_height="48dp"
android:id="@+id/spinner" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Claims Amount :"
android:paddingTop="20sp"
android:paddingLeft="15sp"
android:textSize="17dp"
android:textColor="@color/white"
android:id="@+id/textViewAmount"
android:layout_weight="0.05" />
<EditText
android:layout_width="308dp"
android:layout_height="wrap_content"
android:layout_margin="10sp"
android:background="@drawable/round_corner_square"
android:id="@+id/editTextAmount"
android:paddingLeft="20dp"
android:layout_weight="0.09" />
<ImageView
android:layout_gravity="center"
android:adjustViewBounds="true"
android:scaleType="fitXY"
android:layout_marginTop="20dp"
android:layout_width="200dp"
android:layout_height="200dp"
android:id="@+id/imageView" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Add picture"
android:id="@+id/button"
android:layout_gravity="center_horizontal"
android:layout_weight="0.05" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Enter Description"
android:paddingTop="30sp"
android:paddingLeft="15sp"
android:textSize="17dp"
android:textColor="@color/white"
android:id="@+id/textView12"
android:layout_weight="0.05" />
<EditText
android:layout_width="308dp"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:background="@drawable/round_corner_square"
android:layout_weight="0.12"
android:paddingLeft="20dp"
android:paddingBottom="80dp"
android:layout_x="14dp"
android:layout_y="146dp"
android:id="@+id/textDescription" />
<Button
android:layout_width="159dp"
android:layout_height="wrap_content"
android:text="save"
android:layout_marginTop="20dp"
android:id="@+id/button1"
android:layout_gravity="center_horizontal"
android:layout_weight="0.05" />
</LinearLayout>
</ScrollView>
为什么会发生这种情况，我该如何解决？谢谢
The application may be doing too much work on its main thread.
Layouts are a key part of Android applications that directly affect the user experience. If implemented poorly, your layout can lead to a memory hungry application with slow UIs. The Android SDK includes tools to help you identify problems in your layout performance, which when combined the lessons here, you will be able to implement smooth scrolling interfaces with a minimum memory footprint.
按需加载视图
Beyond simply including one layout component within another layout, you might want to make the included layout visible only when it's needed, sometime after the activity is running. This lesson shows how you can improve your layout's initialization performance by loading portions of your layout on demand.
错误的概念
<ImageView
android:layout_gravity="center"
android:adjustViewBounds="true"
android:scaleType="fitXY"
android:layout_marginTop="20dp"
android:layout_width="200dp"
android:layout_height="200dp"
android:id="@+id/imageView" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Add picture"
android:id="@+id/button"
android:layout_gravity="center_horizontal"
android:layout_weight="0.05" />
这里你用的是android:layout_weight，嗯。然后另一种情况你设置了Hard coded height & Width，这就是为什么有问题。避免硬编码值。