我在 Eclipse 中创建了一个简单的 android 应用程序,并在模拟器上运行它。它真的很慢,当我检查 logcat 时,我看到了几条“过度延迟”行。
编辑:澄清一下,该应用程序确实运行并显示了预期的 'Enter a message sir'。我正在研究为什么它这么慢,并认为过度延迟与滞后有关。
这是我的文件:
模拟器设置:
Target: Android 4.1 - API Level 16
CPU: ARM (armeabi-v7a)
SD Card: 9MiB
Max VM application heap size: 1024
Device Ram Size: 1024
MainActivity.java:
package com.example.my.first.app;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
public class MainActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
}
AndroidManifest.xml:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.my.first.app"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="15" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="@string/title_activity_main" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
活动主.xml:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal" >
<EditText android:id="@+id/welcome_message"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:hint="@string/welcome_message_text"
android:layout_weight="1"/>
<Button android:id="@+id/editor_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/editor_button_text"
android:layout_weight="0"/>
</LinearLayout >
LOGCAT 日志:
09-24 17:26:00.363: E/PowerManagerService(158): Excessive delay setting brightness: 420ms, mask=2
09-24 17:26:00.584: E/PowerManagerService(158): Excessive delay setting brightness: 218ms, mask=2
09-24 17:26:01.602: I/Choreographer(1750): Skipped 48 frames! The application may be doing too much work on its main thread.
09-24 17:26:32.856: I/Choreographer(1750): Skipped 39 frames! The application may be doing too much work on its main thread.
09-24 17:26:52.942: E/PowerManagerService(158): Excessive delay setting brightness: 158ms, mask=2