android.widget.Button#getText ( )源码实例Demo

private void showToast(Button btn) {
  if (toast != null) {
    toast.cancel();
  }

  String text = "Clicked: " + btn.getText();
  toast = Toast.makeText(this, text, Toast.LENGTH_SHORT);
  toast.show();

}
 

private void showToast(Button btn) {
  if (toast != null) {
    toast.cancel();
  }

  String text = "Clicked: " + btn.getText();
  toast = Toast.makeText(this, text, Toast.LENGTH_SHORT);
  toast.show();

}
 

private void showToast(Button btn) {
  if (toast != null) {
    toast.cancel();
  }

  String text = "Clicked: " + btn.getText();
  toast = Toast.makeText(this, text, Toast.LENGTH_SHORT);
  toast.show();

}
 

private void showToast(Button btn) {
  if (toast != null) {
    toast.cancel();
  }

  String text = "Clicked: " + btn.getText();
  toast = Toast.makeText(this, text, Toast.LENGTH_SHORT);
  toast.show();

}
 

/**
 * Checks if a button is existed in the screen.
 * 
 * @param buttonName the name string of the button
 * @param isWait whether wait the text
 * @param isClick whether click the button if find it
 * @return the button to search, and null means can not find the button
 */
public static View getButtonOnScreen(String buttonName, boolean isWait, boolean isClick) {
  View button = null;

  instrumentation.waitForIdleSync();
  if (isWait) {
    SOLO.waitForText(buttonName);
  }

  // Find on action bar.
  if (hasActionBar) {
    ArrayList<View> allViews = SOLO.getViews();
    for (View view : allViews) {
      String className = view.getClass().getName();
      if (className.indexOf("ActionMenuItemView") > 0) {
        String menuItemNameString = view.getContentDescription().toString();
        if (menuItemNameString.equalsIgnoreCase(buttonName)) {
          button = view;
          break;
        }
      }
    }
  }

  // Get all buttons and find.
  if (button == null) {
    ArrayList<Button> currentButtons = SOLO.getCurrentViews(Button.class);
    for (Button oneButton : currentButtons) {
      String title = (String) oneButton.getText();
      if (title.equalsIgnoreCase(buttonName)) {
        button = oneButton;
      }
    }
  }

  if (button != null && isClick) {
    SOLO.clickOnView(button);
  }

  if (button == null && isClick) {
    Log.d(TAG, "Don't find the button " + buttonName);
  }

  return button;
}
 

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);


    Button btnSimpleNotification = findViewById(R.id.btnSimpleNotification);
    Button btnNotificationIcon = findViewById(R.id.btnNotificationIcon);
    Button btnNotificationImage = findViewById(R.id.btnNotificationImage);
    Button btnNotificationWithGroupConvo = findViewById(R.id.btnNotificationWithGroupConvo);
    Button btnNotificationSemantic = findViewById(R.id.btnNotificationSemantic);

    charSequence = btnNotificationIcon.getText();


    btnSimpleNotification.setOnClickListener(this);
    btnNotificationIcon.setOnClickListener(this);
    btnNotificationImage.setOnClickListener(this);
    btnNotificationWithGroupConvo.setOnClickListener(this);
    btnNotificationSemantic.setOnClickListener(this);

    notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    CharSequence name = "My Notification";
    String description = "yadda yadda";
    int importance = NotificationManager.IMPORTANCE_DEFAULT;

    channel = new NotificationChannel("1", name, importance);
    channel.setDescription(description);

    builder = new NotificationCompat.Builder(MainActivity.this, channel.getId())
                    .setSmallIcon(R.mipmap.ic_launcher);


    notificationManager.createNotificationChannel(channel);


}