我在同一个活动中有两个按钮。每个按钮调用RecognizerIntent进行一些语音识别。如果让麦克风图标Image1和Image2变得不可见或者如果说出正确的单词就会消失，我试图完成的任务。
public class Cooking extends Activity implements OnClickListener{
ListView lv;
static final int check = 1;
static final int checka = 2;
int counter_score;
int counter_score_b;
TextView txView;
MediaPlayer ourSong;
ImageView display,image1,image2;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
counter_score=0;
counter_score_b=0;
setContentView(R.layout.cooking);
ImageView image1 = (ImageView) findViewById(R.id.image_1_wrong);
ImageView image2 = (ImageView) findViewById(R.id.image_2_wrong);
initialize();
}
private void initialize() {
// TODO Auto-generated method stub
lv = (ListView)findViewById(R.id.lvVoiceReturn);
txView = (TextView)findViewById(R.id.counter);
ImageView image1 = (ImageView) findViewById(R.id.image_1_wrong);
ImageView image2 = (ImageView) findViewById(R.id.image_2_wrong);
image1.setOnClickListener(this);
image2.setOnClickListener(this);
ActionBar actionBar = getActionBar();
actionBar.setDisplayHomeAsUpEnabled(false);
}
@Override
public void onClick(View v) {
if(v.getId() == R.id.IVimage_1_wrong){
Intent a = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
a.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
a.putExtra(RecognizerIntent.EXTRA_MAX_RESULTS, 1);
a.putExtra(RecognizerIntent.EXTRA_PROMPT, "Speak");
startActivityForResult(a, checka);
}else if(v.getId() == R.id.IVimage_2_wrong){
Intent b = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
b.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
b.putExtra(RecognizerIntent.EXTRA_MAX_RESULTS, 1);
b.putExtra(RecognizerIntent.EXTRA_PROMPT, "Speak.");
startActivityForResult(b, checkb);
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
if (requestCode == checka && resultCode == RESULT_OK){
ArrayList<String> results = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
lv.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, results));
if(results.contains("cooking")|| results.contains("yes really") || results.contains("disease")){
counter_score ++;
///////I though this would make ImageView Image1 not be visible
image1.setVisibility(View.GONE);}
ourSong = MediaPlayer.create(Cooking.this, R.raw.rightsound2);
ourSong.start();
AlertDialog dialogBuilder = new AlertDialog.Builder(this).create();
dialogBuilder.setTitle("Good");dialogBuilder.setMessage("Correct");
dialogBuilder.setIcon(R.drawable.ic_mark);
dialogBuilder.show();
Thread timer = new Thread(){
public void run(){
try{
sleep(2500);
}catch (InterruptedException e){
e.printStackTrace();
} finally {
}
}
};
timer.start();
}else{
lv.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, results));
counter_score +=0;
counter_score_z +=0;
ourSong = MediaPlayer.create(Cooking.this, R.raw.wrongsound);
ourSong.start();
AlertDialog dialogBuilder = new AlertDialog.Builder(this).create();
dialogBuilder.setTitle("Oops");
dialogBuilder.setMessage("Error msg");
dialogBuilder.setIcon(R.drawable.ic_wrong);
dialogBuilder.setButton("Continue", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Intent openMovilTeacherApp = new Intent(Cooking.this, LetterEx.class);
startActivity(openMovilTeacherApp);
finish();
}
});
dialogBuilder.setButton2("Try again", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
dialog.dismiss();
}
});
dialogBuilder.show();
Thread timer = new Thread(){
public void run(){
try{
sleep(4000);
}catch (InterruptedException e){
e.printStackTrace();
} finally {
}
}
};
timer.start();
}
}
//////Delivering MAIL/////
if (requestCode == checkb && resultCode == RESULT_OK){
ArrayList<String> results = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
lv.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, results));
if(results.contains("delivering mail")|| results.contains("no not really") || results.contains("disease")){
counter_score ++ ;
///////// the next line was supposed to make the image2 no be visible, or gone
image2.setVisibility(View.GONE);}
counter_score_z +=1;
ourSong = MediaPlayer.create(Cooking.this, R.raw.rightsound2);
ourSong.start();
AlertDialog dialogBuilder = new AlertDialog.Builder(this).create();
dialogBuilder.setTitle("Good");dialogBuilder.setMessage("Correct");
dialogBuilder.setIcon(R.drawable.ic_mark);
dialogBuilder.show();
Thread timer = new Thread(){
public void run(){
try{
sleep(2500);
}catch (InterruptedException e){
e.printStackTrace();
} finally {
Intent nextAct2 = new Intent(Cooking.this, LetterEx.class);
startActivity(nextAct2);
finish();
}
}
};
timer.start();
}else{
lv.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, results));
counter_score +=0;
txView.setId(0);
counter_score_z +=0;
ourSong = MediaPlayer.create(Cooking.this, R.raw.wrongsound);
ourSong.start();
AlertDialog dialogBuilder = new AlertDialog.Builder(this).create();
dialogBuilder.setTitle("Oops,");
dialogBuilder.setMessage("Error Msg");
dialogBuilder.setIcon(R.drawable.ic_wrong);
dialogBuilder.setButton("Continuar", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Intent openMovilTeacherApp = new Intent(Cooking.this, LetterEx.class);
startActivity(openMovilTeacherApp);
finish();
}
});
dialogBuilder.setButton2("Try again", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
dialog.dismiss();
}
});
dialogBuilder.show();
Thread timer = new Thread(){
public void run(){
try{
sleep(4000);
}catch (InterruptedException e){
e.printStackTrace();
} finally {
}
}
};
timer.start();
}
}
super.onActivityResult(requestCode, resultCode, data);
}
}
我的烹饪文件夹
<ImageView android:src="@drawable/small_right_blue_mic"
android:id="@+id/image_1_wrong"
android:layout_width="68dp"
android:layout_height="68dp"
android:layout_marginLeft="-150dp"
android:layout_marginTop="15dp"
android:visibility="invisible"/>
<ImageView android:src="@drawable/small_right_blue_mic"
android:id="@+id/image_2_wrong"
android:layout_width="52dp"
android:layout_height="59dp"
android:layout_marginLeft="-0dp"
android:layout_marginTop="25dp"
android:visibility="visible"/>
错误日志
08-29 17:15:54.600: E/AndroidRuntime(1953): FATAL EXCEPTION: main
08-29 17:15:54.600: E/AndroidRuntime(1953): java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=222, result=-1, data=Intent { (has extras) }} to activity {com.testapp.app/com.testapp.app.Cooking}: java.lang.NullPointerException
答案 0 :(得分：0)
您的问题是您在本地定义了image1和image2。像这样改变它。而且你只需要使用一次findviewbyid（）。那就是
public class Cooking extends Activity implements OnClickListener{
ListView lv;
static final int check = 1;
static final int checka = 2;
int counter_score;
int counter_score_b;
TextView txView;
MediaPlayer ourSong;
ImageView display,image1,image2;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
counter_score=0;
counter_score_b=0;
setContentView(R.layout.cooking);
image1 = (ImageView) findViewById(R.id.image_1_wrong);
image2 = (ImageView) findViewById(R.id.image_2_wrong);
initialize();
}
private void initialize() {
// TODO Auto-generated method stub
lv = (ListView)findViewById(R.id.lvVoiceReturn);
txView = (TextView)findViewById(R.id.counter);
image1.setOnClickListener(this);
image2.setOnClickListener(this);
ActionBar actionBar = getActionBar();
actionBar.setDisplayHomeAsUpEnabled(false);
}