EditText getText在Button Click中不起作用

Question

MyActivity中有两个EditText。这里我提供了UI XML。

<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="@+id/button_insta"
android:layout_width="135dp"
android:layout_height="0dp"
android:layout_marginBottom="33dp"
android:text="Download"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent" />
<EditText
android:id="@+id/editUrli"
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_marginTop="64dp"
android:layout_marginBottom="18dp"
android:ems="10"
android:inputType="textPersonName"
android:text=""
android:textColor="#0C0C0C"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.0" />
<TextView
android:id="@+id/textView2"
android:layout_width="177dp"
android:layout_height="39dp"
android:layout_marginEnd="81dp"
android:layout_marginRight="81dp"
android:text="Paste Instagram video link to download "
android:textStyle="bold"
app:layout_constraintBottom_toBottomOf="@+id/imageView3"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="@+id/imageView3"
app:layout_constraintTop_toTopOf="@+id/imageView3" />
<ImageView
android:id="@+id/imageView3"
android:layout_width="78dp"
android:layout_height="43dp"
android:layout_marginStart="41dp"
android:layout_marginLeft="41dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="18dp"
android:layout_marginRight="18dp"
android:src="@drawable/insta"
app:layout_constraintEnd_toStartOf="@+id/textView2"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
</com.google.android.material.card.MaterialCardView>
<com.google.android.material.card.MaterialCardView
android:id="@+id/card"
android:layout_width="0dp"
android:layout_height="200dp"
android:layout_margin="8dp"
android:layout_marginStart="16dp"
android:layout_marginLeft="16dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="16dp"
android:layout_marginRight="16dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:ignore="MissingConstraints">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<EditText
android:id="@+id/editUrl"
android:layout_width="wrap_content"
android:layout_height="0dp"
android:layout_marginTop="64dp"
android:layout_marginBottom="18dp"
android:ems="10"
android:inputType="textPersonName"
android:text=""
android:textColor="#0C0C0C"
app:layout_constraintBottom_toTopOf="@+id/button_download"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="@+id/button_download"
android:layout_width="135dp"
android:layout_height="0dp"
android:layout_marginBottom="33dp"
android:text="Download"
android:onClick="onClick"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent" />
<ImageView
android:id="@+id/fblogo"
android:layout_width="95dp"
android:layout_height="39dp"
android:layout_marginStart="16dp"
android:layout_marginLeft="16dp"
android:layout_marginTop="13dp"
android:layout_marginEnd="18dp"
android:layout_marginRight="18dp"
android:layout_marginBottom="13dp"
android:contentDescription="TODO"
android:src="@drawable/fb"
app:layout_constraintBottom_toTopOf="@+id/editUrl"
app:layout_constraintEnd_toStartOf="@+id/textView"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.0" />
<TextView
android:id="@+id/textView"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="75dp"
android:layout_marginRight="75dp"
android:layout_marginBottom="84dp"
android:text="Paste FB video link to download"
android:textStyle="bold"
app:layout_constraintBottom_toTopOf="@+id/button_download"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="@+id/fblogo"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
</com.google.android.material.card.MaterialCardView>

在我的活动java代码有这个按钮点击代码

protected void onCreate(@Nullable  Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_download);

inputURl = findViewById(R.id.editUrl);
editUrlinsta = findViewById(R.id.editUrli);
BtnDownload = (Button) findViewById(R.id.button_download);
downloadinsta = (Button) findViewById(R.id.button_insta);
BtnDownload.setOnClickListener(this);
downloadinsta.setOnClickListener(this);
}
@Override
public void onClick(View v) {
switch (v.getId()){
case R.id.button_download:
try{

final FacebookDownloader downloaders = new FacebookDownloader(Download.this,inputURl.getText().toString());
downloaders.DownloadVideo();
inputURl.getText().clear();
} catch(Exception e) {}
break;
case R.id.button_insta:
final InstaDownloader downloaderInsta = new InstaDownloader(Download.this,editUrlinsta.getText().toString());
downloaderInsta.DownloadVideo();
editUrlinsta.getText().clear();
break;
default:
break;

}
}

问题是我命名为button_download的第一个按钮正在按预期工作。但是第二个按钮button_insta没有按预期工作。我想做的是，当其中一个按钮点击时，从EditText获取数据。button_download运行良好。CCD_ 4工作不正常。单击按钮时，我无法从editUrli中获取值。但相同的代码适用于button_download和editUrl

Answer 1

试着将这些按钮点击功能分开，如下所示：

BtnDownload.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
try{
final FacebookDownloader downloaders = new FacebookDownloader(Download.this,inputURl.getText().toString());
downloaders.DownloadVideo();
inputURl.getText().clear();
} catch(Exception e) {}
}
});
downloadinsta.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
final InstaDownloader downloaderInsta = new InstaDownloader(Download.this,editUrlinsta.getText().toString());
downloaderInsta.DownloadVideo();
editUrlinsta.getText().clear();
}
});