.apk 不会安装在 AVD 上。清单不更新？
.apk will not install on AVD. Manifest not updating?
所以我构建了这个简单的应用程序作为自学的一部分 android class 我正在学习。在我对 Java 文件进行一些更改然后尝试重新安装并再次启动之前，它一直运行良好。从我所做的研究来看，我认为这与清单有关，但我不确定哪里出了问题。如果您需要查看其他任何内容，请询问。我真的很难过这个。在我添加 switch 语句之前它一直在工作。它曾经是一个 if else 集群，我被告知尝试使用 switch statement 来完成它。它似乎在日食中检查出来，但我就是想不通。这是 logcat 输出。
01-22 07:43:12.106: E/libprocessgroup(1717): failed to make and chown
/acct/uid_10054: Read-only file system 01-22 07:43:12.106:
W/Zygote(1717): createProcessGroup failed, kernel missing
CONFIG_CGROUP_CPUACCT? 01-22 07:43:12.107: I/art(1717): Not
late-enabling -Xcheck:jni (already on) 01-22 07:43:12.192:
D/AndroidRuntime(1717): Shutting down VM 01-22 07:43:12.192:
D/AndroidRuntime(1717): --------- beginning of crash 01-22
07:43:12.193: E/AndroidRuntime(1717): FATAL EXCEPTION: main 01-22
07:43:12.193: E/AndroidRuntime(1717): Process:
com.codeherenow.trafficlights, PID: 1717 01-22 07:43:12.193:
E/AndroidRuntime(1717): java.lang.RuntimeException: Unable to
instantiate activity
ComponentInfo{com.codeherenow.trafficlights/com.codeherenow.trafficlights.TrafficLightsActivity}:
java.lang.InstantiationException: class
com.codeherenow.trafficlights.TrafficLightsActivity cannot be
instantiated 01-22 07:43:12.193: E/AndroidRuntime(1717): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2209)
01-22 07:43:12.193: E/AndroidRuntime(1717): at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)
01-22 07:43:12.193: E/AndroidRuntime(1717): at
android.app.ActivityThread.access0(ActivityThread.java:144) 01-22
07:43:12.193: E/AndroidRuntime(1717): at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
01-22 07:43:12.193: E/AndroidRuntime(1717): at
android.os.Handler.dispatchMessage(Handler.java:102) 01-22
07:43:12.193: E/AndroidRuntime(1717): at
android.os.Looper.loop(Looper.java:135) 01-22 07:43:12.193:
E/AndroidRuntime(1717): at
android.app.ActivityThread.main(ActivityThread.java:5221) 01-22
07:43:12.193: E/AndroidRuntime(1717): at
java.lang.reflect.Method.invoke(Native Method) 01-22 07:43:12.193:
E/AndroidRuntime(1717): at
java.lang.reflect.Method.invoke(Method.java:372) 01-22 07:43:12.193:
E/AndroidRuntime(1717): at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
01-22 07:43:12.193: E/AndroidRuntime(1717): at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694) 01-22
07:43:12.193: E/AndroidRuntime(1717): Caused by:
java.lang.InstantiationException: class
com.codeherenow.trafficlights.TrafficLightsActivity cannot be
instantiated 01-22 07:43:12.193: E/AndroidRuntime(1717): at
java.lang.Class.newInstance(Class.java:1553) 01-22 07:43:12.193:
E/AndroidRuntime(1717): at
android.app.Instrumentation.newActivity(Instrumentation.java:1065)
01-22 07:43:12.193: E/AndroidRuntime(1717): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2199)
01-22 07:43:12.193: E/AndroidRuntime(1717): ... 10 more 01-22
07:48:13.660: I/Process(1717): Sending signal. PID: 1717 SIG: 9
这是清单：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.codeherenow.trafficlights"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name">
<activity
android:name="com.codeherenow.trafficlights.TrafficLightsActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
这是java:
package com.codeherenow.trafficlights;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
public abstract class TrafficLightsActivity extends Activity implements OnClickListener {
private ImageView redLight;
private ImageView yellowLight;
private ImageView greenLight;
private Button redButton;
private Button yellowButton;
private Button greenButton;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.traffic_lights);
redLight=(ImageView) findViewById(R.id.red_light);
yellowLight=(ImageView) findViewById(R.id.yellow_light);
greenLight=(ImageView) findViewById(R.id.green_light);
redButton=(Button) findViewById(R.id.Red_Button);
yellowButton=(Button) findViewById(R.id.Yellow_Button);
greenButton=(Button) findViewById(R.id.Green_Button);
redButton.setOnClickListener(this);
yellowButton.setOnClickListener(this);
greenButton.setOnClickListener(this);
redLight.setOnClickListener(this);
yellowLight.setOnClickListener(this);
greenLight.setOnClickListener(this);
}
public void onClick (View v) {
int v2=v.getId();
turnOffLight();
// TODO Auto-generated method stub
switch(v2){
case R.id.Red_Button:case R.id.red_light:
turnOnRedLight();
break;
case R.id.Yellow_Button: case R.id.yellow_light:
turnOnYellowLight();
break;
case R.id.Green_Button: case R.id.green_light:
turnOnGreenLight();
break;
default:
break;
}
}
private void turnOffLight() {
// TODO Auto-generated method stub
redLight.setImageResource(R.drawable.light_off);
greenLight.setImageResource(R.drawable.light_off);
yellowLight.setImageResource(R.drawable.light_off);
}
private void turnOnGreenLight() {
// TODO Auto-generated method stub
greenLight.setImageResource(R.drawable.green_on);
}
private void turnOnYellowLight() {
// TODO Auto-generated method stub
yellowLight.setImageResource(R.drawable.yellow_on);
}
private void turnOnRedLight() {
// TODO Auto-generated method stub
redLight.setImageResource(R.drawable.red_on);
}
}
public abstract class TrafficLightsActivity
而你的错误是 Caused by: java.lang.InstantiationException:..
解决方案是
public class TrafficLightsActivity
所以我构建了这个简单的应用程序作为自学的一部分 android class 我正在学习。在我对 Java 文件进行一些更改然后尝试重新安装并再次启动之前，它一直运行良好。从我所做的研究来看，我认为这与清单有关，但我不确定哪里出了问题。如果您需要查看其他任何内容，请询问。我真的很难过这个。在我添加 switch 语句之前它一直在工作。它曾经是一个 if else 集群，我被告知尝试使用 switch statement 来完成它。它似乎在日食中检查出来，但我就是想不通。这是 logcat 输出。
01-22 07:43:12.106: E/libprocessgroup(1717): failed to make and chown /acct/uid_10054: Read-only file system 01-22 07:43:12.106: W/Zygote(1717): createProcessGroup failed, kernel missing CONFIG_CGROUP_CPUACCT? 01-22 07:43:12.107: I/art(1717): Not late-enabling -Xcheck:jni (already on) 01-22 07:43:12.192: D/AndroidRuntime(1717): Shutting down VM 01-22 07:43:12.192: D/AndroidRuntime(1717): --------- beginning of crash 01-22 07:43:12.193: E/AndroidRuntime(1717): FATAL EXCEPTION: main 01-22 07:43:12.193: E/AndroidRuntime(1717): Process: com.codeherenow.trafficlights, PID: 1717 01-22 07:43:12.193: E/AndroidRuntime(1717): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.codeherenow.trafficlights/com.codeherenow.trafficlights.TrafficLightsActivity}: java.lang.InstantiationException: class com.codeherenow.trafficlights.TrafficLightsActivity cannot be instantiated 01-22 07:43:12.193: E/AndroidRuntime(1717): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2209) 01-22 07:43:12.193: E/AndroidRuntime(1717): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360) 01-22 07:43:12.193: E/AndroidRuntime(1717): at android.app.ActivityThread.access0(ActivityThread.java:144) 01-22 07:43:12.193: E/AndroidRuntime(1717): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278) 01-22 07:43:12.193: E/AndroidRuntime(1717): at android.os.Handler.dispatchMessage(Handler.java:102) 01-22 07:43:12.193: E/AndroidRuntime(1717): at android.os.Looper.loop(Looper.java:135) 01-22 07:43:12.193: E/AndroidRuntime(1717): at android.app.ActivityThread.main(ActivityThread.java:5221) 01-22 07:43:12.193: E/AndroidRuntime(1717): at java.lang.reflect.Method.invoke(Native Method) 01-22 07:43:12.193: E/AndroidRuntime(1717): at java.lang.reflect.Method.invoke(Method.java:372) 01-22 07:43:12.193: E/AndroidRuntime(1717): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899) 01-22 07:43:12.193: E/AndroidRuntime(1717): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694) 01-22 07:43:12.193: E/AndroidRuntime(1717): Caused by: java.lang.InstantiationException: class com.codeherenow.trafficlights.TrafficLightsActivity cannot be instantiated 01-22 07:43:12.193: E/AndroidRuntime(1717): at java.lang.Class.newInstance(Class.java:1553) 01-22 07:43:12.193: E/AndroidRuntime(1717): at android.app.Instrumentation.newActivity(Instrumentation.java:1065) 01-22 07:43:12.193: E/AndroidRuntime(1717): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2199) 01-22 07:43:12.193: E/AndroidRuntime(1717): ... 10 more 01-22 07:48:13.660: I/Process(1717): Sending signal. PID: 1717 SIG: 9
这是清单：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.codeherenow.trafficlights"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name">
<activity
android:name="com.codeherenow.trafficlights.TrafficLightsActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
这是java:
package com.codeherenow.trafficlights;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
public abstract class TrafficLightsActivity extends Activity implements OnClickListener {
private ImageView redLight;
private ImageView yellowLight;
private ImageView greenLight;
private Button redButton;
private Button yellowButton;
private Button greenButton;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.traffic_lights);
redLight=(ImageView) findViewById(R.id.red_light);
yellowLight=(ImageView) findViewById(R.id.yellow_light);
greenLight=(ImageView) findViewById(R.id.green_light);
redButton=(Button) findViewById(R.id.Red_Button);
yellowButton=(Button) findViewById(R.id.Yellow_Button);
greenButton=(Button) findViewById(R.id.Green_Button);
redButton.setOnClickListener(this);
yellowButton.setOnClickListener(this);
greenButton.setOnClickListener(this);
redLight.setOnClickListener(this);
yellowLight.setOnClickListener(this);
greenLight.setOnClickListener(this);
}
public void onClick (View v) {
int v2=v.getId();
turnOffLight();
// TODO Auto-generated method stub
switch(v2){
case R.id.Red_Button:case R.id.red_light:
turnOnRedLight();
break;
case R.id.Yellow_Button: case R.id.yellow_light:
turnOnYellowLight();
break;
case R.id.Green_Button: case R.id.green_light:
turnOnGreenLight();
break;
default:
break;
}
}
private void turnOffLight() {
// TODO Auto-generated method stub
redLight.setImageResource(R.drawable.light_off);
greenLight.setImageResource(R.drawable.light_off);
yellowLight.setImageResource(R.drawable.light_off);
}
private void turnOnGreenLight() {
// TODO Auto-generated method stub
greenLight.setImageResource(R.drawable.green_on);
}
private void turnOnYellowLight() {
// TODO Auto-generated method stub
yellowLight.setImageResource(R.drawable.yellow_on);
}
private void turnOnRedLight() {
// TODO Auto-generated method stub
redLight.setImageResource(R.drawable.red_on);
}
}
public abstract class TrafficLightsActivity
而你的错误是 Caused by: java.lang.InstantiationException:..
解决方案是
public class TrafficLightsActivity