[英]Not getting any value from EditText in activity
我知道這可能看起來很愚蠢,但我仍然對為什么這個 edittext 返回空值感到沮喪。
ImageButton attach = findViewById(R.id.btn_attach);
Button send = findViewById(R.id.btn_send);
EditText message = findViewById(R.id.report_message);
content = message.getText().toString(); // <!-- always null
send.setOnClickListener(v -> {
if (searchSpinner.getSelectedItems().size() == 0 || content.equals("")) {
Toast.makeText(getApplicationContext(), content + " > " + categoryList.toString().substring(1, categoryList.toString().length()-1),Toast.LENGTH_LONG).show();
} else {
if (imageList.size() != 0) {
doMultipartRequest();
} else {
doSendRequest();
}
}
});
想不出任何可能的原因,除了我不小心點擊了某個東西,它創建了一個重復的布局,並在布局文件夾中生成了一個目錄,名稱為 x24
您需要從setOnClickListener()
內的EditText
獲取文本
嘗試這個
send.setOnClickListener(v -> {
content = message.getText().toString(); // <!-- always null
if (searchSpinner.getSelectedItems().size() == 0 || content.equals("")) {
Toast.makeText(getApplicationContext(),
content + " > " +
categoryList.toString().substring(1, categoryList.toString().length()-1),
Toast.LENGTH_LONG).show();
} else {
if (imageList.size() != 0) {
doMultipartRequest();
} else {
doSendRequest();
}
}
});
嘗試這個:-
ImageButton attach = findViewById(R.id.btn_attach);
Button send = findViewById(R.id.btn_send);
EditText message = findViewById(R.id.report_message);
send.setOnClickListener(v -> {
if (searchSpinner.getSelectedItems().size() == 0 || message.getText().toString().equals("")) {
Toast.makeText(getApplicationContext(),
message.getText().toString()+ " > " +
categoryList.toString().substring(1, categoryList.toString().length()-1),
Toast.LENGTH_LONG).show();
} else {
if (imageList.size() != 0) {
doMultipartRequest();
} else {
doSendRequest();
}
}
});
希望它會起作用
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