我正在尝试从Android开发书中测试一个简单的Android应用程序，我在运行应用程序时遇到了一个错误消息。不幸的是应用已经停止 （当我取出setStarUpScreenText（）;应用程序运行但不显示所需的文本。 MainActivity
package chaper.two.hello_world;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.widget.TextView;
public class MainActivity extends Activity {
WorldGen earth = new WorldGen("Earth", 5973, 9.78); //Create a World Object
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
setStartUpWorldValues();
setStarUpScreenText(); //when this is removed, application runs but text from object is not displayed.
}
protected void setStartUpWorldValues(){
earth.setPlanetColonies(1); //Set Planet Colonies to one
earth.setPlanetMilitary(1); //Set Planet Military Bases to on
earth.setColonyImmigration(1000); //Set Planet Population to 1,000
earth.setBaseProtection(100); //Set Planet Armed Forces to 100
earth.turnForceFieldOn(); // Turn On the Planet Forcefield
}
protected void setStarUpScreenText(){
//sets up text for each View
TextView planetNameValue = (TextView)findViewById(R.id.DataView1);
planetNameValue.setText(earth.planetName);
TextView planetMassValue = (TextView)findViewById(R.id.DataView2);
planetMassValue.setText(earth.planetMass);
TextView planetGravityValue = (TextView)findViewById(R.id.DataView3);
planetGravityValue.setText(String.valueOf(earth.planetGravity));
TextView planetColoniesValue = (TextView)findViewById(R.id.DataView4);
planetColoniesValue.setText(String.valueOf(earth.planetColonies));
TextView planetPopulationValue = (TextView)findViewById(R.id.DataView5);
planetPopulationValue.setText(String.valueOf(earth.planetPopulation));
TextView planetMilitaryValue = (TextView)findViewById(R.id.DataView6);
planetMilitaryValue.setText(String.valueOf(earth.planetMilitary));
TextView planetBasesValue = (TextView)findViewById(R.id.DataView7);
planetBasesValue.setText(String.valueOf(earth.planetBases));
TextView planetForceFieldValue = (TextView)findViewById(R.id.DataView8);
planetForceFieldValue.setText(String.valueOf(earth.planetProtection));
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
MainActiviy XML
<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<TextView
android:id="@+id/TextView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/planet_name_label" />
<TextView
android:id="@+id/TextView2"
android:layout_below="@+id/TextView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/planet_mass_label" />
<TextView
android:id="@+id/TextView3"
android:layout_below="@+id/TextView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/planet_gravity_label" />
<TextView
android:id="@+id/TextView4"
android:layout_below="@+id/TextView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/planet_colonies_label" />
<TextView
android:id="@+id/TextView5"
android:layout_below="@+id/TextView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/planet_population_label" />
<TextView
android:id="@+id/TextView6"
android:layout_below="@+id/TextView5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/planet_military_label" />
<TextView
android:id="@+id/TextView7"
android:layout_below="@+id/TextView6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/planet_bases_label" />
<TextView
android:id="@+id/TextView8"
android:layout_below="@+id/TextView7"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/planet_forcefield_label" />
<TextView
android:id="@+id/DataView1"
android:layout_toRightOf="@+id/TextView1"
android:layout_marginLeft="36dip"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TextView
android:id="@+id/DataView2"
android:layout_toRightOf="@+id/TextView2"
android:layout_below="@+id/DataView1"
android:layout_alignStart="@+id/DataView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<TextView
android:id="@+id/DataView3"
android:layout_toRightOf="@+id/TextView3"
android:layout_below="@+id/DataView2"
android:layout_alignStart="@+id/DataView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TextView
android:id="@+id/DataView4"
android:layout_toRightOf="@+id/TextView4"
android:layout_below="@+id/DataView3"
android:layout_alignStart="@+id/DataView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TextView
android:id="@+id/DataView5"
android:layout_toRightOf="@+id/TextView5"
android:layout_below="@+id/DataView4"
android:layout_alignStart="@+id/DataView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<TextView
android:id="@+id/DataView6"
android:layout_toRightOf="@+id/TextView6"
android:layout_below="@+id/DataView5"
android:layout_alignStart="@+id/DataView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<TextView
android:id="@+id/DataView7"
android:layout_toRightOf="@+id/TextView6"
android:layout_below="@+id/DataView6"
android:layout_alignStart="@+id/DataView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TextView
android:id="@+id/DataView8"
android:layout_toRightOf="@+id/TextView8"
android:layout_below="@+id/DataView7"
android:layout_alignStart="@+id/DataView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</RelativeLayout>
我的logcat错误：
10-14 04:16:58.866: E/AndroidRuntime(853): FATAL EXCEPTION: main
10-14 04:16:58.866: E/AndroidRuntime(853): java.lang.RuntimeException: Unable to start activity ComponentInfo{chaper.two.hello_world/chaper.two.hello_world.MainActivity}: android.content.res.Resources$NotFoundException: String resource ID #0x1755
10-14 04:16:58.866: E/AndroidRuntime(853): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2211)
10-14 04:16:58.866: E/AndroidRuntime(853): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261)
10-14 04:16:58.866: E/AndroidRuntime(853): at android.app.ActivityThread.access$600(ActivityThread.java:141)
10-14 04:16:58.866: E/AndroidRuntime(853): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
10-14 04:16:58.866: E/AndroidRuntime(853): at android.os.Handler.dispatchMessage(Handler.java:99)
10-14 04:16:58.866: E/AndroidRuntime(853): at android.os.Looper.loop(Looper.java:137)
10-14 04:16:58.866: E/AndroidRuntime(853): at android.app.ActivityThread.main(ActivityThread.java:5103)
10-14 04:16:58.866: E/AndroidRuntime(853): at java.lang.reflect.Method.invokeNative(Native Method)
10-14 04:16:58.866: E/AndroidRuntime(853): at java.lang.reflect.Method.invoke(Method.java:525)
10-14 04:16:58.866: E/AndroidRuntime(853): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
10-14 04:16:58.866: E/AndroidRuntime(853): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
10-14 04:16:58.866: E/AndroidRuntime(853): at dalvik.system.NativeStart.main(Native Method)
10-14 04:16:58.866: E/AndroidRuntime(853): Caused by: android.content.res.Resources$NotFoundException: String resource ID #0x1755
10-14 04:16:58.866: E/AndroidRuntime(853): at android.content.res.Resources.getText(Resources.java:239)
10-14 04:16:58.866: E/AndroidRuntime(853): at android.widget.TextView.setText(TextView.java:3837)
10-14 04:16:58.866: E/AndroidRuntime(853): at chaper.two.hello_world.MainActivity.setStarUpScreenText(MainActivity.java:28)
10-14 04:16:58.866: E/AndroidRuntime(853): at chaper.two.hello_world.MainActivity.onCreate(MainActivity.java:15)
10-14 04:16:58.866: E/AndroidRuntime(853): at android.app.Activity.performCreate(Activity.java:5133)
10-14 04:16:58.866: E/AndroidRuntime(853): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
10-14 04:16:58.866: E/AndroidRuntime(853): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2175)
10-14 04:16:58.866: E/AndroidRuntime(853): ... 11 more
用test替换earth.planetMass
10-14 16:11:03.537: W/ResourceType(827): No package identifier when getting value for resource number 0x00001755
10-14 16:11:03.546: D/AndroidRuntime(827): Shutting down VM
10-14 16:11:03.546: W/dalvikvm(827): threadid=1: thread exiting with uncaught exception (group=0x414c4700)
10-14 16:11:03.556: E/AndroidRuntime(827): FATAL EXCEPTION: main
10-14 16:11:03.556: E/AndroidRuntime(827): java.lang.RuntimeException: Unable to start activity ComponentInfo{chaper.two.hello_world/chaper.two.hello_world.MainActivity}: android.content.res.Resources$NotFoundException: String resource ID #0x1755
10-14 16:11:03.556: E/AndroidRuntime(827): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2211)
10-14 16:11:03.556: E/AndroidRuntime(827): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261)
10-14 16:11:03.556: E/AndroidRuntime(827): at android.app.ActivityThread.access$600(ActivityThread.java:141)
10-14 16:11:03.556: E/AndroidRuntime(827): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
10-14 16:11:03.556: E/AndroidRuntime(827): at android.os.Handler.dispatchMessage(Handler.java:99)
10-14 16:11:03.556: E/AndroidRuntime(827): at android.os.Looper.loop(Looper.java:137)
10-14 16:11:03.556: E/AndroidRuntime(827): at android.app.ActivityThread.main(ActivityThread.java:5103)
10-14 16:11:03.556: E/AndroidRuntime(827): at java.lang.reflect.Method.invokeNative(Native Method)
10-14 16:11:03.556: E/AndroidRuntime(827): at java.lang.reflect.Method.invoke(Method.java:525)
10-14 16:11:03.556: E/AndroidRuntime(827): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
10-14 16:11:03.556: E/AndroidRuntime(827): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
10-14 16:11:03.556: E/AndroidRuntime(827): at dalvik.system.NativeStart.main(Native Method)
10-14 16:11:03.556: E/AndroidRuntime(827): Caused by: android.content.res.Resources$NotFoundException: String resource ID #0x1755
10-14 16:11:03.556: E/AndroidRuntime(827): at android.content.res.Resources.getText(Resources.java:239)
10-14 16:11:03.556: E/AndroidRuntime(827): at android.widget.TextView.setText(TextView.java:3837)
10-14 16:11:03.556: E/AndroidRuntime(827): at chaper.two.hello_world.MainActivity.setStarUpScreenText(MainActivity.java:29)
10-14 16:11:03.556: E/AndroidRuntime(827): at chaper.two.hello_world.MainActivity.onCreate(MainActivity.java:15)
10-14 16:11:03.556: E/AndroidRuntime(827): at android.app.Activity.performCreate(Activity.java:5133)
10-14 16:11:03.556: E/AndroidRuntime(827): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
10-14 16:11:03.556: E/AndroidRuntime(827): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2175)
10-14 16:11:03.556: E/AndroidRuntime(827): ... 11 more
10-14 16:11:16.206: I/Process(827): Sending signal. PID: 827 SIG: 9
10-14 16:11:40.146: W/ResourceType(853): No package identifier when getting value for resource number 0x00001755
10-14 16:11:40.146: D/AndroidRuntime(853): Shutting down VM
10-14 16:11:40.146: W/dalvikvm(853): threadid=1: thread exiting with uncaught exception (group=0x414c4700)
10-14 16:11:40.166: E/AndroidRuntime(853): FATAL EXCEPTION: main
10-14 16:11:40.166: E/AndroidRuntime(853): java.lang.RuntimeException: Unable to start activity ComponentInfo{chaper.two.hello_world/chaper.two.hello_world.MainActivity}: android.content.res.Resources$NotFoundException: String resource ID #0x1755
10-14 16:11:40.166: E/AndroidRuntime(853): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2211)
10-14 16:11:40.166: E/AndroidRuntime(853): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261)
10-14 16:11:40.166: E/AndroidRuntime(853): at android.app.ActivityThread.access$600(ActivityThread.java:141)
10-14 16:11:40.166: E/AndroidRuntime(853): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
10-14 16:11:40.166: E/AndroidRuntime(853): at android.os.Handler.dispatchMessage(Handler.java:99)
10-14 16:11:40.166: E/AndroidRuntime(853): at android.os.Looper.loop(Looper.java:137)
10-14 16:11:40.166: E/AndroidRuntime(853): at android.app.ActivityThread.main(ActivityThread.java:5103)
10-14 16:11:40.166: E/AndroidRuntime(853): at java.lang.reflect.Method.invokeNative(Native Method)
10-14 16:11:40.166: E/AndroidRuntime(853): at java.lang.reflect.Method.invoke(Method.java:525)
10-14 16:11:40.166: E/AndroidRuntime(853): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
10-14 16:11:40.166: E/AndroidRuntime(853): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
10-14 16:11:40.166: E/AndroidRuntime(853): at dalvik.system.NativeStart.main(Native Method)
10-14 16:11:40.166: E/AndroidRuntime(853): Caused by: android.content.res.Resources$NotFoundException: String resource ID #0x1755
10-14 16:11:40.166: E/AndroidRuntime(853): at android.content.res.Resources.getText(Resources.java:239)
10-14 16:11:40.166: E/AndroidRuntime(853): at android.widget.TextView.setText(TextView.java:3837)
10-14 16:11:40.166: E/AndroidRuntime(853): at chaper.two.hello_world.MainActivity.setStarUpScreenText(MainActivity.java:29)
10-14 16:11:40.166: E/AndroidRuntime(853): at chaper.two.hello_world.MainActivity.onCreate(MainActivity.java:15)
10-14 16:11:40.166: E/AndroidRuntime(853): at android.app.Activity.performCreate(Activity.java:5133)
10-14 16:11:40.166: E/AndroidRuntime(853): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
10-14 16:11:40.166: E/AndroidRuntime(853): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2175)
10-14 16:11:40.166: E/AndroidRuntime(853): ... 11 more
10-14 16:17:27.547: W/ResourceType(941): No package identifier when getting value for resource number 0x00001755
10-14 16:17:27.547: D/AndroidRuntime(941): Shutting down VM
10-14 16:17:27.547: W/dalvikvm(941): threadid=1: thread exiting with uncaught exception (group=0x414c4700)
10-14 16:17:27.566: E/AndroidRuntime(941): FATAL EXCEPTION: main
10-14 16:17:27.566: E/AndroidRuntime(941): java.lang.RuntimeException: Unable to start activity ComponentInfo{chaper.two.hello_world/chaper.two.hello_world.MainActivity}: android.content.res.Resources$NotFoundException: String resource ID #0x1755
10-14 16:17:27.566: E/AndroidRuntime(941): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2211)
10-14 16:17:27.566: E/AndroidRuntime(941): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261)
10-14 16:17:27.566: E/AndroidRuntime(941): at android.app.ActivityThread.access$600(ActivityThread.java:141)
10-14 16:17:27.566: E/AndroidRuntime(941): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
10-14 16:17:27.566: E/AndroidRuntime(941): at android.os.Handler.dispatchMessage(Handler.java:99)
10-14 16:17:27.566: E/AndroidRuntime(941): at android.os.Looper.loop(Looper.java:137)
10-14 16:17:27.566: E/AndroidRuntime(941): at android.app.ActivityThread.main(ActivityThread.java:5103)
10-14 16:17:27.566: E/AndroidRuntime(941): at java.lang.reflect.Method.invokeNative(Native Method)
10-14 16:17:27.566: E/AndroidRuntime(941): at java.lang.reflect.Method.invoke(Method.java:525)
10-14 16:17:27.566: E/AndroidRuntime(941): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
10-14 16:17:27.566: E/AndroidRuntime(941): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
10-14 16:17:27.566: E/AndroidRuntime(941): at dalvik.system.NativeStart.main(Native Method)
10-14 16:17:27.566: E/AndroidRuntime(941): Caused by: android.content.res.Resources$NotFoundException: String resource ID #0x1755
10-14 16:17:27.566: E/AndroidRuntime(941): at android.content.res.Resources.getText(Resources.java:239)
10-14 16:17:27.566: E/AndroidRuntime(941): at android.widget.TextView.setText(TextView.java:3837)
10-14 16:17:27.566: E/AndroidRuntime(941): at chaper.two.hello_world.MainActivity.setStarUpScreenText(MainActivity.java:29)
10-14 16:17:27.566: E/AndroidRuntime(941): at chaper.two.hello_world.MainActivity.onCreate(MainActivity.java:15)
10-14 16:17:27.566: E/AndroidRuntime(941): at android.app.Activity.performCreate(Activity.java:5133)
10-14 16:17:27.566: E/AndroidRuntime(941): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
10-14 16:17:27.566: E/AndroidRuntime(941): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2175)
10-14 16:17:27.566: E/AndroidRuntime(941): ... 11 more
10-14 16:17:33.606: I/Process(941): Sending signal. PID: 941 SIG: 9
答案 0 :(得分：1)
根据LogCat，您缺少引用的字符串资源：
Caused by: android.content.res.Resources$NotFoundException: String resource ID #0x1755
第28行
at chaper.two.hello_world.MainActivity.setStarUpScreenText(MainActivity.java:28)
这就是这条线：
planetMassValue.setText(earth.planetMass);
您的res/values/strings.xml似乎缺少来自类planetMass的对象earth的属性WorldGen所指向的字符串。
如果字符串在那里，并且您正确引用它，则R文件可能存在一些问题。所以只做一个项目 - ＆gt;清理，以便重建R文件。