我是Android编程新手。这是我的MainActivty.java和布局文件。我按下按钮,但有时它的工作原理有时不起作用。这里有什么问题?谢谢你的帮助
mainactivity
public class MainActivity extends Activity implements OnClickListener {
Button mix,verb,noun,adjective,adverb,meaning;
TextView screen, result, checkmeaning;
ExpandableListView list;
String[] vocabulary = { "open", "computer", "get up", "good", "carefully" };
String[] vocabularyType = { "verb", "noun", "verb", "adjective", "adverb" };
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
setupButtons();
}
public int karistir() {
Random rnd = new Random();
int sayi;
sayi = rnd.nextInt(vocabulary.length);
return sayi;
}
private void setupButtons() {
list = (ExpandableListView) findViewById(R.id.expandableListView1);
screen = (TextView) findViewById(R.id.screen);
result = (TextView) findViewById(R.id.result);
checkmeaning = (TextView) findViewById(R.id.textView1);
mix = (Button) findViewById(R.id.start);
verb = (Button) findViewById(R.id.button1);
noun = (Button) findViewById(R.id.button2);
adjective= (Button) findViewById(R.id.button3);
adverb= (Button) findViewById(R.id.button4);
meaning= (Button) findViewById(R.id.button5);
verb.setOnClickListener(this);
noun.setOnClickListener(this);
adjective.setOnClickListener(this);
adverb.setOnClickListener(this);
meaning.setOnClickListener(this);
mix.setOnClickListener(this);
}
@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;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
public void onClick(View v) {
try {
if (mix.isPressed()) {
result.setText("");
screen.setText("");
int i = karistir();
screen.setText(vocabulary[i]);
}
else if (verb.isPressed()){
int x = Arrays.binarySearch(vocabulary, screen.getText());
if(vocabularyType[x]=="verb"){
result.setText("TRUE");
}
}
else if (noun.isPressed()){
int x = Arrays.binarySearch(vocabulary, screen.getText());
if(vocabularyType[x]=="noun"){
result.setText("TRUE");
}
}
else if( adjective.isPressed()){
int x = Arrays.binarySearch(vocabulary, screen.getText());
if(vocabularyType[x]=="adjective"){
result.setText("TRUE");
}
}
else if (adverb.isPressed()){
int x = Arrays.binarySearch(vocabulary, screen.getText());
if(vocabularyType[x]=="adverb"){
result.setText("TRUE");
}
}
} catch (Exception e) {
// TODO: handle exception
}
}
布局文件
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_below="@+id/result"
android:layout_marginLeft="5dp"
android:layout_marginTop="5dp"
android:layout_toRightOf="@+id/start"
android:orientation="vertical" >
<ExpandableListView
android:id="@+id/expandableListView1"
android:layout_width="fill_parent"
android:layout_height="79dp"
android:layout_weight="1" >
</ExpandableListView>
<Button
android:id="@+id/start"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="50dp"
android:layout_weight="1"
android:text="New Vocabulary"
android:textSize="20sp" />
<TextView
android:id="@+id/screen"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:layout_weight="1"
android:text="TextView"
android:textSize="20sp" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1" >
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Verb" />
<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Noun" />
<Button
android:id="@+id/button3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Adjective" />
<Button
android:id="@+id/button4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Adverb" />
</LinearLayout>
<TextView
android:id="@+id/result"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:layout_weight="1"
android:text="TextView"
android:textSize="25sp" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1" >
<Button
android:id="@+id/button5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="50"
android:text="Button" />
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="50"
android:text="TextView"
android:textSize="30sp" />
</LinearLayout>
</LinearLayout>
&#13;
答案 0 :(得分:1)
使用此方法代替您的方法:
@Override
public void onClick(View v) {
int IdButton = v.getId();
switch (IdButton){
case R.id.button:
//Do stuff
break;
case R.id.button2:
//Do stuff
break;
}
}
否则,在{x}中Button
(示例)添加android:onClick="NounClick"
的每个<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:onClick="NounClick"
android:text="Noun" />
,并且应该是:
public void NounClick(View v) {
Toast.makeText(MainActivity.this, "NounClicked", Toast.LENGTH_SHORT).show();
// does something very interesting
}
方法应该是:
verb.setOnClickListener(this);
noun.setOnClickListener(this);
adjective.setOnClickListener(this);
adverb.setOnClickListener(this);
meaning.setOnClickListener(this);
mix.setOnClickListener(this);
顺便说一下如果您使用我的上一个选项,请确保将其删除:
CLICKS
length=5; index=-1
如果您调试了代码,那么您的问题并不适合{1}}您知道当您按错了答案时,您的索引为-1 = onClick()
所以我已经改变了你的代码,我改进了你的#34;游戏&#34;,看一看。
您的 case R.id.start:
gamestart = true;
result.setText("");
screen.setText("");
IndexQuestion = karistir();
screen.setText(vocabulary[IndexQuestion]);
Log.d("LLETRA i", String.valueOf(IndexQuestion));
break;
case R.id.button1:
if(gamestart) {
if (vocabularyType[IndexQuestion].equals("verb")) {
result.setText("TRUE");
} else {
result.setText("FALSE");
}
}
break;
case R.id.button2:
if(gamestart) {
if (vocabularyType[IndexQuestion].equals("noun")) {
result.setText("TRUE");
} else {
result.setText("FALSE");
}
}
break;
case R.id.button3:
if(gamestart) {
if (vocabularyType[IndexQuestion].equals("adjective")) {
result.setText("TRUE");
} else {
result.setText("FALSE");
}
}
break;
case R.id.button4:
if(gamestart) {
if (vocabularyType[IndexQuestion].equals("adverb")) {
result.setText("TRUE");
} else {
result.setText("FALSE");
}
}
break;
default:
break;
}
} catch (Exception e) {
// TODO: handle exception
Log.d(TAG,e.getMessage());
}
}
方法应该是:
@覆盖 public void onClick(查看v){ 尝试{ switch(v.getId()){
IndexQuestion
您还要创建一个名为int IndexQuestion;
Boolean gamestart = false;
的全局变量,它是问题的索引。
我还添加了一个全局变量,因为我知道游戏是否已经启动,因为当我点击动词时毫无疑问它会说&#34; TRUE&#34;或者&#34; FALSE&#34;我避免它。
创建那些全局变量:
{{1}}
注意:这只是游戏的骨架,您可以根据需要进行更改
答案 1 :(得分:1)
不要在button.ispressed()
方法中使用v.getid()
使用onclick()
,而是使用带有id的按钮大小的switch语句,如下所示:
@Override
public void onClick(View v) {
switch(v.getId()){
case R.id.start :
//Do whatever you want to do here
break;
case R.id.button1:
//Do whatever you want to do here
break;
}
答案 2 :(得分:0)
第一点:
请勿使用verb.isPressed()
来确定按下了哪个按钮。
使用视图ID:
@Override
public void onClick(View v) {
if (v.getId() == R.id.button1) {
}else if(v.getId() == R.id.button2) {
}else if(...){} // and so on
第二点:
这是错误的:
if(vocabularyType[y]=="noun")
比较字符串时,你应该像这样使用String.equals():
if(vocabularyType[y].equals("noun"))
答案 3 :(得分:0)
您可以像这样设置OnClickListeners:
yourButton.setOnClickListener(new Button.OnClickListener() {
@Override
public void onClick(View v) {
//Do something
}
});
只需将其放在onCreate方法
上答案 4 :(得分:0)
audioimage.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
try
{
//Do Something
}
catch(Exception e)
{
e.printStackTrace();
}
}
});