我做了吐司按摩,当单击按钮时应该会出现
public class CreateEmailActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_create_email);
Button send = findViewById(R.id.bntSendMail);
send.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Toast.makeText(getApplicationContext(),"Sending...",Toast.LENGTH_SHORT).show();
}
});
}
...
...
}
答案 0 :(得分:1)
您可以尝试以下方法:
public class CreateEmailActivity extends Activity implements View.OnClickListener {
//Declare Button
Button send;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_create_email);
//Intialize Button
send = (Button) findViewById(R.id.bntSendMail);
send.setOnClickListener(CreateEmailActivity.this);
}
@Override
public void onClick(View v) {
switch(v.getId()) {
case R.id.bntSendMail:
Toast.makeText(this, "Sending...",Toast.LENGTH_SHORT).show();
break;
}
}
}
我认为问题在于如何初始化按钮,但是通过这种方式,您可以以更简洁的方式处理更多点击事件。
答案 1 :(得分:0)
尝试
Toast.makeText( CreateEmailActivity.this,"Sending...",Toast.LENGTH_SHORT).show();
答案 2 :(得分:0)
用上下文替换getApplicationContext()。
public class CreateEmailActivity extends AppCompatActivity {
private Context context = CreateEmailActivity.this; //Add this
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_create_email);
Button send = findViewById(R.id.bntSendMail);
send.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Toast.makeText(context,"Sending...",Toast.LENGTH_SHORT).show();
}
});
}
...
...
}