当我点击numbersIntent侦听器打开我的NumbersActivity类文件时，我的Android应用程序崩溃了。
我正在使用在NumbersActivity类文件上设置的arraylist名称“word”来使用while循环分配字符串列表。
除NumbersActivity类文件外，其他类看起来很好。我无法弄清楚为什么，有人可以帮忙吗？
以下是java文件
package com.example.android.miwok;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.TextView;
import android.widget.Button;
import android.view.View.OnClickListener;
import static android.R.attr.onClick;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Set the content of the activity to use the activity_main.xml layout file
setContentView(R.layout.activity_main);
// public void openNumbersList(View view){
// Intent i = new Intent(this,NumbersActivity.class);
// startActivity(i);
// }
// Find the View that shows the numbers category
TextView numbers = (TextView) findViewById(R.id.numbers);
// Set a click listener on that View
numbers.setOnClickListener(new OnClickListener() {
// The code in this method will be executed when the numbers category is clicked on.
@Override
public void onClick(View view) {
// Create a new intent to open the {@link NumbersActivity}
Intent numbersIntent = new Intent(MainActivity.this, NumbersActivity.class);
// Start the new activity
startActivity(numbersIntent);
}
});
// Find the View that shows the family category
TextView family = (TextView) findViewById(R.id.family);
// Set a click listener on that View
family.setOnClickListener(new OnClickListener() {
// The code in this method will be executed when the family category is clicked on.
@Override
public void onClick(View view) {
// Create a new intent to open the {@link FamilyActivity}
Intent familyIntent = new Intent(MainActivity.this, FamilyActivity.class);
// Start the new activity
startActivity(familyIntent);
}
});
// Find the View that shows the colors category
TextView colors = (TextView) findViewById(R.id.colors);
// Set a click listener on that View
colors.setOnClickListener(new OnClickListener() {
// The code in this method will be executed when the colors category is clicked on.
@Override
public void onClick(View view) {
// Create a new intent to open the {@link ColorsActivity}
Intent colorsIntent = new Intent(MainActivity.this, ColorsActivity.class);
// Start the new activity
startActivity(colorsIntent);
}
});
// Find the View that shows the phrases category
TextView phrases = (TextView) findViewById(R.id.phrases);
// Set a click listener on that View
phrases.setOnClickListener(new OnClickListener() {
// The code in this method will be executed when the phrases category is clicked on.
@Override
public void onClick(View view) {
// Create a new intent to open the {@link PhrasesActivity}
Intent phrasesIntent = new Intent(MainActivity.this, PhrasesActivity.class);
// Start the new activity
startActivity(phrasesIntent);
}
});
}
}
以下是我的logcat结果：
11-01 23:12:59.226 23384-23384/? E/Zygote: v2
11-01 23:12:59.226 23384-23384/? I/libpersona: KNOX_SDCARD checking this for 10238
11-01 23:12:59.226 23384-23384/? I/libpersona: KNOX_SDCARD not a persona
11-01 23:12:59.226 23384-23384/? I/SELinux: Function: selinux_compare_spd_ram, index[1], SPD-policy is existed. and_ver=SEPF_SM-A700FD_5.0.2-1 ver=51
11-01 23:12:59.226 23384-23384/? W/SELinux: Function: selinux_compare_spd_ram, index[1], priority [2], priority version is VE=SEPF_SECMOBILE_6.0.1_0029
11-01 23:12:59.226 23384-23384/? W/SELinux: SELinux: seapp_context_lookup: seinfo=default, level=s0:c512,c768, pkgname=com.example.android.miwok
11-01 23:12:59.226 23384-23384/? I/art: Late-enabling -Xcheck:jni
11-01 23:12:59.286 23384-23384/? D/TimaKeyStoreProvider: TimaSignature is unavailable
11-01 23:12:59.286 23384-23384/? D/ActivityThread: Added TimaKeyStore provider
11-01 23:12:59.456 23384-23384/com.example.android.miwok W/System: ClassLoader referenced unknown path: /data/app/com.example.android.miwok-1/lib/arm
11-01 23:12:59.856 23384-23384/com.example.android.miwok D/SecWifiDisplayUtil: Metadata value : none
11-01 23:12:59.856 23384-23384/com.example.android.miwok D/ViewRootImpl: #1 mView = com.android.internal.policy.PhoneWindow$DecorView{cca8e96 I.E...... R.....ID 0,0-0,0}
11-01 23:12:59.866 23384-23399/com.example.android.miwok D/OpenGLRenderer: Use EGL_SWAP_BEHAVIOR_PRESERVED: true
11-01 23:12:59.946 23384-23399/com.example.android.miwok I/Adreno: QUALCOMM build : d842ad3, Ia10634f51b
Build Date : 01/04/16
OpenGL ES Shader Compiler Version: XE031.06.00.05
Local Branch :
Remote Branch : quic/LA.BR.1.2.6_rb1.7
Remote Branch : NONE
Reconstruct Branch : NOTHING
11-01 23:12:59.956 23384-23399/com.example.android.miwok I/OpenGLRenderer: Initialized EGL, version 1.4
11-01 23:12:59.986 23384-23384/com.example.android.miwok V/ActivityThread: updateVisibility : ActivityRecord{ee55121 token=android.os.BinderProxy@7ab99b1 {com.example.android.miwok/com.example.android.miwok.MainActivity}} show : true
11-01 23:13:00.006 23384-23384/com.example.android.miwok D/ViewRootImpl: MSG_RESIZED_REPORT: ci=Rect(0, 72 - 0, 0) vi=Rect(0, 72 - 0, 0) or=1
11-01 23:13:00.026 23384-23399/com.example.android.miwok D/libGLESv1: DTS_GLAPI : DTS is not allowed for Package : com.example.android.miwok
11-01 23:13:00.076 23384-23384/com.example.android.miwok I/Timeline: Timeline: Activity_idle id: android.os.BinderProxy@7ab99b1 time:230587661
11-01 23:13:02.196 23384-23384/com.example.android.miwok D/ViewRootImpl: MSG_RESIZED_REPORT: ci=Rect(0, 72 - 0, 0) vi=Rect(0, 72 - 0, 0) or=1
11-01 23:13:02.236 23384-23384/com.example.android.miwok I/Timeline: Timeline: Activity_idle id: android.os.BinderProxy@7ab99b1 time:230589825
11-01 23:13:03.176 23384-23384/com.example.android.miwok I/Timeline: Timeline: Activity_idle id: android.os.BinderProxy@7ab99b1 time:230590768
11-01 23:13:09.576 23384-23384/com.example.android.miwok D/ViewRootImpl: ViewPostImeInputStage processPointer 0
11-01 23:13:09.616 23384-23384/com.example.android.miwok D/ViewRootImpl: ViewPostImeInputStage processPointer 1
11-01 23:13:09.626 23384-23384/com.example.android.miwok I/Timeline: Timeline: Activity_launch_request id:com.example.android.miwok time:230597210
以下是我的NumbersActivity java文件：
package com.example.android.miwok;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.LinearLayout;
import android.widget.TextView;
import java.util.ArrayList;
public class NumbersActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_numbers);
ArrayList<String> words = new ArrayList<String>();
words.add("One");
words.add("Two");
words.add("three");
words.add("Four");
words.add("Five");
words.add("Six");
words.add("Seven");
words.add("Eight");
words.add("Nine");
words.add("Ten");
LinearLayout rootView = (LinearLayout) findViewById(R.id.rootView);
int index = 0;
while (index < words.size());
{
TextView wordView = new TextView(this);
wordView.setText(words.get(index));
rootView.addView(wordView);
index++;
}
}
}
这是我的活动主xml文件
<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:background="@color/tan_background"
android:orientation="vertical"
tools:context="com.example.android.miwok.MainActivity">
<TextView
android:id="@+id/numbers"
style="@style/CategoryStyle"
android:background="@color/category_numbers"
android:text="@string/category_numbers" />
<TextView
android:id="@+id/family"
style="@style/CategoryStyle"
android:background="@color/category_family"
android:text="@string/category_family" />
<TextView
android:id="@+id/colors"
style="@style/CategoryStyle"
android:background="@color/category_colors"
android:text="@string/category_colors" />
<TextView
android:id="@+id/phrases"
style="@style/CategoryStyle"
android:background="@color/category_phrases"
android:text="@string/category_phrases" />
</LinearLayout>
here is my activity_numbers xml file
<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:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:orientation="vertical"
android:id="@+id/rootView"
tools:context="com.example.android.miwok.NumbersActivity">
</LinearLayout>
答案 0 :(得分：1)
在您的NumbersActivity中，您有以下代码行：
while (index < words.size());
尝试删除运营商末尾的＆＃34;;＆＃34; ，应该是这样的：
while (index < words.size())
答案 1 :(得分：-1)
编辑答案
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
View view = getLayoutInflater().inflate(R.layout.activity_numbers, null);
setContentView(view);
ArrayList<String> words = new ArrayList<String>();
words.add("One");
words.add("Two");
words.add("three");
words.add("Four");
words.add("Five");
words.add("Six");
words.add("Seven");
words.add("Eight");
words.add("Nine");
words.add("Ten");
int index = 0;
while (index < words.size());{
TextView wordView = new TextView(this);
wordView.setText(words.get(index));
view.addView(wordView);
index++;
}
}