Question

如果第一次运行该应用，我希望启动按钮btnAdd的点击事件。

我已阅读How can I click a button to launch an ItemSelected event of spinner control?

我该怎么办？谢谢！

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

    IniControls();      

            if (IsFirstRun){
        Button btnAdd=(Button)findViewById(R.id.btnAdd);
                //launch a clike event of the button btnADD
            }   

}

 private void IniControls(){
         findViewById(R.id.btnAdd).setOnClickListener(new OnClickListener() {
    @Override
    public void onClick(View v) {
        Intent intent = new Intent().setClass(getApplicationContext(),ui.UnlockAddWiFi.class);
        startActivityForResult(intent, RESULT_ADDWIFI);             
    }
    }); 
}

Answer 1

嗯。我能想到的最简单方法是做出偏好。

private Button btnAdd;

   @Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.unlock_main);
    IniControls();  
    SharedPreferences sp =  PreferenceManager.getDefaultSharedPreferences(this);
    final Boolean IsFirstRun =  sp.getBoolean("firsttime", true);
    sp.edit().putBoolean("firsttime", false).apply();
    if (IsFirstRun){
        btnAdd.performClick();
            }  
} 
 private void IniControls(){
    btnAdd = (Button) findViewById(R.id.btnAdd);
    btnAdd.setOnClickListener(new OnClickListener() {
    @Override
    public void onClick(View v) {
        Intent intent = new Intent().setClass(getApplicationContext(),ui.UnlockAddWiFi.class);
        startActivityForResult(intent, RESULT_ADDWIFI);             
    }
    }); 
}

Answer 2

只需编写一个充当onClick（）内容的方法，并将其放在onClick（）侦听器和SharedPreferences中，如Solamum所建议的那样。

private Button mButton = null;
.
.
.

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

    /****************************************************************/
    SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(this);
    final Boolean IsFirstRun =  sp.getBoolean("firsttime", true);
    sp.edit().putBoolean("firsttime", false).apply();
    if (IsFirstRun){
          myClickEventMethod();
    }         
}

private void myClickEventMethod(){
    Intent intent = new Intent().setClass(getApplicationContext(),ui.UnlockAddWiFi.class);
    startActivityForResult(intent, RESULT_ADDWIFI); 
}

private void initControls(){
     mButton = findViewById(R.id.btnAdd).setOnClickListener(new OnClickListener() {
         @Override
         public void onClick(View v) {
            myClickEventMethod();
         }
     }); 
}

如何启动按钮的单击事件？

2 个答案: