我正在编写一个简单的应用程序，该应用程序运行良好，但我遇到的问题是，如果输入正确，我正在使用密码条件来触发按钮单击。
问题是我的源代码说从未使用过“onButtonClick”，当我在应用程序中手动按下该按钮时，它突然强制关闭并崩溃。任何人都知道我做错了什么。我在源代码的开头扩展Activity。我应该扩展AppCompatActivity吗？
public class Gvoice extends Activity implements OnClickListener{
ListView lv1;
static final int check = 1111;
Button b1;
Button b_home;
EditText a1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.gvoice);
lv1 = (ListView)findViewById(R.id.LVGVoiceReturn);
b1 = (Button)findViewById(R.id.GVoice);
a1 = (EditText) findViewById(R.id.editTextHome);
b1.setOnClickListener(this);
//This now handles an automatic press of the bVoice button 1 second after the activity is opened
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
b1.callOnClick();
}
}, 1000);
}
public void onButtonClick(View v) {
if (v.getId() == R.id.BHome) {
String str = a1.getText().toString();
//Go to the relevant page if any part of the phrase or word entered in the 'EditText' field contains 'xxx' which is not case sensitive
if (str.toLowerCase().contains("home")) {
Intent userintent = new Intent(Gvoice.this, PocketSphinxActivity.class);
startActivity(userintent);
} else {
Toast.makeText(getApplicationContext(), "Incorrect Information", Toast.LENGTH_SHORT).show();
}
}
}
public void onClick(View v){
Intent i1 = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
i1.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
i1.putExtra(RecognizerIntent.EXTRA_PROMPT, "Please Repeat Again");
startActivityForResult(i1, check);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == check && resultCode == RESULT_OK){
ArrayList<String> results = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);
lv1.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, results));
a1.setText((String) lv1.getItemAtPosition(0)); //Get the first phrase in the first row of list view
Handler handler = new Handler();
handler.postDelayed(new Runnable() {
@Override
public void run() {
b_home.performClick();
}
}, 500); //Automatically click the 'Blogin' button after 500ms
}
super.onActivityResult(requestCode, resultCode, data);
}
}
更新:下面是 xml 文件。请注意，onButtonClick 已添加到 xml 文件中，但当使用条件语句单击按钮时，它仍然强制关闭应用程序:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ececec">
<ImageView
android:layout_width="100dip"
android:layout_height="100dip"
android:background="@drawable/patient_two"
android:id="@+id/pimage"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="85dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="Patient Name: Joe Blogs"
android:id="@+id/textView"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="50dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="Cause of Injury: Car crash"
android:id="@+id/textView2"
android:layout_below="@+id/pimage"
android:layout_centerHorizontal="true"
android:layout_marginTop="15dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="Date of Birth:"
android:id="@+id/textView3"
android:layout_below="@+id/textView2"
android:layout_toStartOf="@+id/textView2"
android:layout_marginTop="25dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="Gender:"
android:id="@+id/textView4"
android:layout_below="@+id/textView3"
android:layout_alignStart="@+id/textView3" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="Occupation:"
android:id="@+id/textView5"
android:layout_below="@+id/textView4"
android:layout_alignStart="@+id/textView4" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="Address:"
android:id="@+id/textView6"
android:layout_below="@+id/textView5"
android:layout_alignStart="@+id/textView5" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Medical History"
android:id="@+id/textView7"
android:layout_marginTop="15dp"
android:layout_below="@+id/textView6"
android:layout_centerHorizontal="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="Heart attack"
android:id="@+id/textView8"
android:layout_marginTop="15dp"
android:layout_below="@+id/textView7"
android:layout_alignStart="@+id/textView6" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="Arthritis"
android:id="@+id/textView9"
android:layout_below="@+id/textView8"
android:layout_alignStart="@+id/textView8" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Tests Completed"
android:id="@+id/textView10"
android:layout_marginTop="15dp"
android:layout_below="@+id/textView9"
android:layout_centerHorizontal="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="X-Ray"
android:id="@+id/textView11"
android:layout_below="@+id/textView10"
android:layout_alignStart="@+id/textView9"
android:layout_marginTop="15dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="..."
android:id="@+id/textView12"
android:layout_below="@+id/textView11"
android:layout_alignStart="@+id/textView11" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="Tests Due"
android:id="@+id/textView14"
android:layout_below="@+id/textView12"
android:layout_centerHorizontal="true"
android:layout_marginTop="15dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="..."
android:id="@+id/textView15"
android:layout_below="@+id/textView14"
android:layout_alignStart="@+id/textView12"
android:layout_marginTop="15dp" />
<ListView
android:layout_width="150dp"
android:layout_height="50dp"
android:id="@+id/lvVoiceReturn1"
android:textColor="@color/white"
android:layout_alignParentBottom="true"
android:layout_alignParentStart="true" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Enter"
android:id="@+id/Blogin1"
android:onClick="onButtonClick"
android:layout_alignParentBottom="true"
android:layout_toStartOf="@+id/bVoice1" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Speak"
android:id="@+id/bVoice1"
android:layout_alignParentBottom="true"
android:layout_alignParentEnd="true" />
<EditText
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/TFusername1"
android:layout_alignParentStart="true"
android:hint="Speech to Text" />
最佳答案
您可以通过4种方法处理按钮点击:
方法一:
public class Mtest extends Activity {
Button b1;
public void onCreate(Bundle savedInstanceState) {
...
Button b1 = (Button) findViewById(R.id.b1);
b1.setOnClickListener(myhandler1);
...
}
View.OnClickListener myhandler1 = new View.OnClickListener() {
public void onClick(View v) {
// it was the 1st button
}
};
}
方法2:
class MTest extends Activity implements OnClickListener {
public void onCreate(Bundle savedInstanceState) {
...
Button b1 = (Button) findViewById(R.id.b1);
b1.setOnClickListener(this);
...
}
@Override
public void onClick(View v) {
}
}
xml 和 android:onClick="HandleClick"中的方法 3:
<Button
android:id="@+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="HandleClick" />
public class MTest extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
public void HandleClick(View view) {
}
}
方法4:
public class MTest extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button b1 = (Button) findViewById(R.id.b1);
b1.setOnClickListener(new OnClickListener() {
public void onClick(View view) {
// do stuff
}
});
}
}
关于java - onButtonClick 从未在源代码中使用过？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/37316101/