Question

是否可以以编程方式将图像添加到Toast弹出窗口？

Answer 1

是，您可以使用setView（）方法将imageview或任何视图添加到Toast通知中，使用此方法可以根据您的要求自定义Toast。

在这里，我创建了一个自定义布局文件，将其扩展为Toast通知，然后我使用setView（）方法在Toast通知中使用了此布局。

<强> cust_toast_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:id="@+id/relativeLayout1"
  android:background="@android:color/white">

    <TextView
        android:textAppearance="?android:attr/textAppearanceLarge"
        android:id="@+id/textView1" android:layout_height="wrap_content"
        android:layout_width="fill_parent"
        android:text="PM is here"
        android:gravity="center"
        android:textColor="@android:color/black">
    </TextView>

    <ImageView
        android:layout_height="wrap_content"
        android:layout_width="fill_parent"
        android:src="@drawable/new_logo"
        android:layout_below="@+id/textView1"
        android:layout_margin="5dip"
        android:id="@+id/imageView1">
    </ImageView>

    <TextView
        android:id="@+id/textView2"
        android:layout_height="wrap_content"
        android:layout_width="fill_parent"
        android:text="This is the demo of Custom Toast Notification"
        android:gravity="center"
        android:layout_below="@+id/imageView1"
        android:textColor="@android:color/black">
    </TextView>

</RelativeLayout>

<强> CustomToastDemoActivity.java

LayoutInflater inflater = getLayoutInflater();
View view = inflater.inflate(R.layout.cust_toast_layout, 
    (ViewGroup)findViewById(R.id.relativeLayout1));

Toast toast = new Toast(this);
toast.setView(view);
toast.show();

Answer 2

简单地说，使用以下内容：

Toast toast = new Toast(myContext);
ImageView view = new ImageView(myContext); 
view.setImageResource(R.drawable.image_icon); 
toast.setView(view); 
toast.show();

Answer 3

您可以以编程方式创建任何视图（因为我假设您正在询问如何在不使用LayoutInflater的情况下执行此操作）并在您创建的Toast上调用setView。

    //Create a view here
    LinearLayout v = new LinearLayout(this);
    //populate layout with your image and text or whatever you want to put in here

    Toast toast = new Toast(getApplicationContext());
    toast.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
    toast.setDuration(Toast.LENGTH_LONG);
    toast.setView(v);
    toast.show();

Answer 4

Knickedi的解决方案很好，但是如果您只需要文本旁边的图标，您可以利用Toast具有相同ID的预定义TextView并在TextView上设置图标的事实：

Toast toast = Toast.makeText(context, text, Toast.LENGTH_SHORT);
TextView tv = (TextView) toast.getView().findViewById(android.R.id.message);
if (null!=tv) {
    tv.setCompoundDrawablesWithIntrinsicBounds(icon, 0, 0, 0);
    tv.setCompoundDrawablePadding(context.getResources().getDimensionPixelSize(R.dimen.padding_toast));

Answer 5

始终可以创建自定义布局。有一个事实我不喜欢它：它打破了系统默认的toast UI。这可能在不同的平台和实现上有所不同。没有简单的方法来使用系统默认资源，因此我决定破解吐司并强制将图像加入其中。

提示：你可以得到这样的默认资源：
Toast.makeToast(context, "", 0).getView().getBackground()

这是一个帮助器，它将在toast消息前显示一个图像： Helper.makeImageToast(context, R.drawable.my_image, "Toast with image", Toast.LENGTH_SHORT).show()

我用它来表示成功，信息或错误。使吐司信息更好，更具表现力......

（值得一提的是，hack基于内部toast使用LinearLayout的事实，因此不是系统和实现独立的。请参阅注释。）

public static Toast makeImageToast(Context context, int imageResId, CharSequence text, int length) {
    Toast toast = Toast.makeText(context, text, length);

    View rootView = toast.getView();
    LinearLayout linearLayout = null;
    View messageTextView = null;

    // check (expected) toast layout
    if (rootView instanceof LinearLayout) {
        linearLayout = (LinearLayout) rootView;

        if (linearLayout.getChildCount() == 1) {
            View child = linearLayout.getChildAt(0);

            if (child instanceof TextView) {
                messageTextView = (TextView) child;
            }
        }
    }

    // cancel modification because toast layout is not what we expected
    if (linearLayout == null || messageTextView == null) {
        return toast;
    }

    ViewGroup.LayoutParams textParams = messageTextView.getLayoutParams();
    ((LinearLayout.LayoutParams) textParams).gravity = Gravity.CENTER_VERTICAL;

    // convert dip dimension
    float density = context.getResources().getDisplayMetrics().density;
    int imageSize = (int) (density * 25 + 0.5f);
    int imageMargin = (int) (density * 15 + 0.5f);

    // setup image view layout parameters
    LinearLayout.LayoutParams imageParams = new LinearLayout.LayoutParams(imageSize, imageSize);
    imageParams.setMargins(0, 0, imageMargin, 0);
    imageParams.gravity = Gravity.CENTER_VERTICAL;

    // setup image view
    ImageView imageView = new ImageView(context);
    imageView.setImageResource(imageResId);
    imageView.setLayoutParams(imageParams);

    // modify root layout
    linearLayout.setOrientation(LinearLayout.HORIZONTAL);
    linearLayout.addView(imageView, 0);

    return toast;
}

Answer 6

我认为我们在传递给makeImageToast函数的图像上显示Toast文本会更好... 所以我对Knickedi代码进行着色并且：

public class utility  {

public static Toast makeImageToast(Context context, int imageResId, CharSequence text, int length) {
    Toast toast = Toast.makeText(context, text, length);

    View rootView = toast.getView();
    LinearLayout linearLayout = null;
    View messageTextView = null;

    // check (expected) toast layout
    if (rootView instanceof LinearLayout) {
        linearLayout = (LinearLayout) rootView;

        if (linearLayout.getChildCount() == 1) {
            View child = linearLayout.getChildAt(0);

            if (child instanceof TextView) {
                messageTextView = (TextView) child;
                ((TextView) child).setGravity(Gravity.CENTER);

            }
        }
    }

    // cancel modification because toast layout is not what we expected
    if (linearLayout == null || messageTextView == null) {
        return toast;
    }

    ViewGroup.LayoutParams textParams = messageTextView.getLayoutParams();
    ((LinearLayout.LayoutParams) textParams).gravity = Gravity.CENTER;

    // convert dip dimension
    float density = context.getResources().getDisplayMetrics().density;
    int imageSize = (int) (density * 25 + 0.5f);
    int imageMargin = (int) (density * 15 + 0.5f);

    // setup image view layout parameters
    LinearLayout.LayoutParams imageParams = new LinearLayout.LayoutParams(imageSize, imageSize);
    imageParams.setMargins(0, 0, imageMargin, 0);
    imageParams.gravity = Gravity.CENTER;

    // setup image view
    ImageView imageView = new ImageView(context);
    imageView.setImageResource(imageResId);
    imageView.setLayoutParams(imageParams);


    // modify root layout
    linearLayout.setOrientation(LinearLayout.HORIZONTAL);
    linearLayout.setBackgroundResource(imageResId);
    linearLayout.setGravity(Gravity.CENTER);
    linearLayout.setHorizontalGravity(Gravity.CENTER);
    linearLayout.setHorizontalGravity(Gravity.CENTER);
    //addView(imageView, 0);

    return toast;
}

}

这就是它的用法：

utility.makeImageToast(getApplicationContext(),
                 R.drawable.your_image,"your_text",Toast.LENGTH_LONG).show();

Answer 7

Toast aa = Toast.makeText(getBaseContext(), "OPEN",Toast.LENGTH_SHORT);
ImageView cc = new ImageView(getBaseContext());
cc.setImageResource(R.drawable.a);
aa.setView(cc);
aa.show();

Answer 8

    class CustomToast extends AppCompatActivity {
    Button custom_toast;

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

        custom_toast = (Button) findViewById(R.id.customToast);
        custom_toast.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                LayoutInflater inflater=getLayoutInflater();
                View layout=inflater.inflate(R.layout.custom_toast_layout, (ViewGroup) findViewById(R.id.toast_layout_root));

                TextView toastTextView=(TextView) findViewById(R.id.toastTextView);
                ImageView toastimageview=(ImageView) findViewById(R.id.toastImageView);
                toastTextView.setText("Custom toast in android");
                toastimageview.setImageResource(R.drawable.ic_launcher_background);

                Toast toast=new Toast(CustomToast.this);
                toast.setDuration(Toast.LENGTH_SHORT);
                toast.setView(layout);
                toast.show();
            }
        });
    }
}

将图像添加到Toast？

8 个答案: