I am new in android development. I start for android accessibility work to make android application accessible for blind people. I made simple login form and set accessibility attribute such as content description and focus etc I turn on talk back and check it.
here is code activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<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:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
tools:context=".MainActivity"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="@string/usernm_text"
android:id="@+id/username"
android:contentDescription="@string/usernm_text"
android:focusable="true"
android:nextFocusDown="@+id/usr_nm"
/>
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="textPersonName"
android:ems="10"
android:id="@+id/usr_nm"
android:contentDescription="@string/usernm_text"
android:focusable="true"
android:text="admin"
android:nextFocusDown="@+id/password"
android:nextFocusUp="@id/usr_nm"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="@string/pass_text"
android:id="@+id/password"
android:focusable="true"
android:nextFocusDown="@+id/pass_edit"
android:contentDescription="@string/pass_text"
android:nextFocusUp="@id/usr_nm"/>
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inputType="textPassword"
android:ems="10"
android:id="@+id/pass_edit"
android:contentDescription="@string/pass_text"
android:text="admin"
android:focusable="true"
android:nextFocusDown="@+id/login"
android:nextFocusUp="@id/password"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/login_btn"
android:onClick="log"
android:id="@+id/login"
android:contentDescription="@string/login_btn"
android:focusable="true"
android:nextFocusUp="@id/pass_edit"
android:accessibilityLiveRegion="polite" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:id="@+id/log_succ"
android:focusable="true"
android:accessibilityLiveRegion="polite" />
</LinearLayout>
in my MainActivity.java
public class MainActivity extends AppCompatActivity {
EditText usr_nm;
TextView log_succ;
Button logs;
EditText pass_edit;
int counter=5;
String log_msg="login successful";
Button log_btn;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
log_succ=(TextView) findViewById(R.id.log_succ);
usr_nm=(EditText) findViewById(R.id.usr_nm);
pass_edit=(EditText)findViewById(R.id.pass_edit);
}
public void log(View view) {
if (usr_nm.getText().toString().equals("admin") &&
pass_edit.getText().toString().equals("admin")) {
log_succ.setText(log_msg);
log_succ.setContentDescription("Login successful");
// log_succ.isFocusable();
// Toast.makeText(MainActivity.this, "password is correct", Toast.LENGTH_LONG).show();
// Intent in = new Intent("com.example.samir.login_form.user_page");
// startActivity(in);
} else {
Toast.makeText(MainActivity.this, "password is incorrect", Toast.LENGTH_SHORT).show();
counter--;
if (counter == 0)
logs.setEnabled(false);
}
}
login successful textview prompt by talkback when touch it. i want that when i click on login button then textview "Login successful" should be prompt by talkback immediately. I set AccessibilityliveRegion to "polite". what else should i do??
From what i understood, you want the system to speak up "Login Successful" after the user logs in.
You can achieve this using TextToSpeech
class.
First declare an object of TextToSpeech
(a Global/Class variable):
TextToSpeech tts;
Then set it to instantiate & speak up when your login process is successful:
tts = new TextToSpeech(getApplicationContext(), new TextToSpeech.OnInitListener() {
@Override
public void onInit(int status) {
if(status == TextToSpeech.SUCCESS){
tts.setLanguage(Locale.US);
tts.speak("Login Successful", TextToSpeech.QUEUE_FLUSH, null);
}
}
});
Also, don't forget to release the resources after you are done:
@Override
protected void onPause() {
if(tts!=null){
tts.stop();
tts.shutdown();
}
super.onPause();
}
Hope this helps.
如果我们为 textview 设置 android:accessibilityLiveRegion="polite" ,这是可能的..谢谢您的回复。
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