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2025-11-01 09:14:26 +00:00 · 2018-09-25 19:48:08 +00:00
parent 3dfcbdf88f
commit ad63e9fa2a
2 changed files with 126 additions and 2 deletions
@@ -41,7 +41,9 @@
 <p>There is also a function <code>showWithGravity</code> to specify the layout gravity. May be ToastAndroid.TOP, ToastAndroid.BOTTOM, ToastAndroid.CENTER.</p>
 <p>The 'showWithGravityAndOffset' function adds on the ability to specify offset These offset values will translate to pixels.</p>
 <p>Basic usage:</p>
-<pre><code class="hljs css language-javascript">ToastAndroid.show(<span class="hljs-string">'A pikachu appeared nearby !'</span>, ToastAndroid.SHORT);
+<pre><code class="hljs css language-javascript"><span class="hljs-keyword">import</span> { ToastAndroid } <span class="hljs-keyword">from</span> <span class="hljs-string">'react-native'</span>; 
+
+ToastAndroid.show(<span class="hljs-string">'A pikachu appeared nearby !'</span>, ToastAndroid.SHORT);
 ToastAndroid.showWithGravity(
  <span class="hljs-string">'All Your Base Are Belong To Us'</span>,
  ToastAndroid.SHORT,
@@ -55,6 +57,66 @@ ToastAndroid.showWithGravityAndOffset(
  <span class="hljs-number">50</span>
 );
 </code></pre>
+<h3><a class="anchor" aria-hidden="true" id="advanced-usage"></a><a href="#advanced-usage" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Advanced usage:</h3>
+<p>The ToastAndroid API is imperative and this might present itself as an issue, but there is actually a way(hack)
+to expose a declarative component from it. See an example below:</p>
+<pre><code class="hljs css language-javascript"><span class="hljs-keyword">import</span> React, { Component } <span class="hljs-keyword">from</span> <span class="hljs-string">'react'</span>;
+<span class="hljs-keyword">import</span> {
+  View,
+  Button,
+  ToastAndroid,
+} <span class="hljs-keyword">from</span> <span class="hljs-string">'react-native'</span>;
+
+<span class="hljs-comment">// a component that calls the imperative ToastAndroid API</span>
+<span class="hljs-keyword">const</span> Toast = <span class="hljs-function">(<span class="hljs-params">props</span>) =&gt;</span> {
+  <span class="hljs-keyword">if</span> (props.visible) {
+    ToastAndroid.showWithGravityAndOffset(
+      props.message,
+      ToastAndroid.LONG,
+      ToastAndroid.BOTTOM,
+      <span class="hljs-number">25</span>,
+      <span class="hljs-number">50</span>
+    );
+    <span class="hljs-keyword">return</span> <span class="hljs-literal">null</span>;
+  }
+  <span class="hljs-keyword">return</span> <span class="hljs-literal">null</span>;
+};
+
+<span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">App</span> <span class="hljs-keyword">extends</span> <span class="hljs-title">Component</span> </span>{
+  <span class="hljs-keyword">constructor</span>(props) {
+    <span class="hljs-keyword">super</span>(props);
+    <span class="hljs-keyword">this</span>.state = {
+      <span class="hljs-attr">visible</span>: <span class="hljs-literal">false</span>,
+    };
+  }
+
+  handleButtonPress = <span class="hljs-function"><span class="hljs-params">()</span> =&gt;</span> {
+    <span class="hljs-keyword">this</span>.setState({
+        <span class="hljs-attr">visible</span>: <span class="hljs-literal">true</span>,
+    }, () =&gt; {
+      <span class="hljs-keyword">this</span>.hideToast();
+    });
+  };
+
+  hideToast = <span class="hljs-function"><span class="hljs-params">()</span> =&gt;</span> {
+    <span class="hljs-keyword">this</span>.setState({
+      <span class="hljs-attr">visible</span>: <span class="hljs-literal">false</span>
+    })
+  }
+
+  render() {
+    <span class="hljs-keyword">return</span> (
+      &lt;View style={styles.container}&gt;
+        &lt;Toast
+          visible={this.state.visible}
+          message="Example"
+        /&gt;
+        &lt;Button title="Toggle Modal" onPress={this.handleButtonPress} /&gt;
+      &lt;/View&gt;
+    );
+  }
+}
+</code></pre>
 <h3><a class="anchor" aria-hidden="true" id="methods"></a><a href="#methods" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Methods</h3>
 <ul>
 <li><a href="/react-native/docs/next/toastandroid#show"><code>show</code></a></li>
@@ -41,7 +41,9 @@
 <p>There is also a function <code>showWithGravity</code> to specify the layout gravity. May be ToastAndroid.TOP, ToastAndroid.BOTTOM, ToastAndroid.CENTER.</p>
 <p>The 'showWithGravityAndOffset' function adds on the ability to specify offset These offset values will translate to pixels.</p>
 <p>Basic usage:</p>
-<pre><code class="hljs css language-javascript">ToastAndroid.show(<span class="hljs-string">'A pikachu appeared nearby !'</span>, ToastAndroid.SHORT);
+<pre><code class="hljs css language-javascript"><span class="hljs-keyword">import</span> { ToastAndroid } <span class="hljs-keyword">from</span> <span class="hljs-string">'react-native'</span>; 
+
+ToastAndroid.show(<span class="hljs-string">'A pikachu appeared nearby !'</span>, ToastAndroid.SHORT);
 ToastAndroid.showWithGravity(
  <span class="hljs-string">'All Your Base Are Belong To Us'</span>,
  ToastAndroid.SHORT,
@@ -55,6 +57,66 @@ ToastAndroid.showWithGravityAndOffset(
  <span class="hljs-number">50</span>
 );
 </code></pre>
+<h3><a class="anchor" aria-hidden="true" id="advanced-usage"></a><a href="#advanced-usage" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Advanced usage:</h3>
+<p>The ToastAndroid API is imperative and this might present itself as an issue, but there is actually a way(hack)
+to expose a declarative component from it. See an example below:</p>
+<pre><code class="hljs css language-javascript"><span class="hljs-keyword">import</span> React, { Component } <span class="hljs-keyword">from</span> <span class="hljs-string">'react'</span>;
+<span class="hljs-keyword">import</span> {
+  View,
+  Button,
+  ToastAndroid,
+} <span class="hljs-keyword">from</span> <span class="hljs-string">'react-native'</span>;
+
+<span class="hljs-comment">// a component that calls the imperative ToastAndroid API</span>
+<span class="hljs-keyword">const</span> Toast = <span class="hljs-function">(<span class="hljs-params">props</span>) =&gt;</span> {
+  <span class="hljs-keyword">if</span> (props.visible) {
+    ToastAndroid.showWithGravityAndOffset(
+      props.message,
+      ToastAndroid.LONG,
+      ToastAndroid.BOTTOM,
+      <span class="hljs-number">25</span>,
+      <span class="hljs-number">50</span>
+    );
+    <span class="hljs-keyword">return</span> <span class="hljs-literal">null</span>;
+  }
+  <span class="hljs-keyword">return</span> <span class="hljs-literal">null</span>;
+};
+
+<span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">App</span> <span class="hljs-keyword">extends</span> <span class="hljs-title">Component</span> </span>{
+  <span class="hljs-keyword">constructor</span>(props) {
+    <span class="hljs-keyword">super</span>(props);
+    <span class="hljs-keyword">this</span>.state = {
+      <span class="hljs-attr">visible</span>: <span class="hljs-literal">false</span>,
+    };
+  }
+
+  handleButtonPress = <span class="hljs-function"><span class="hljs-params">()</span> =&gt;</span> {
+    <span class="hljs-keyword">this</span>.setState({
+        <span class="hljs-attr">visible</span>: <span class="hljs-literal">true</span>,
+    }, () =&gt; {
+      <span class="hljs-keyword">this</span>.hideToast();
+    });
+  };
+
+  hideToast = <span class="hljs-function"><span class="hljs-params">()</span> =&gt;</span> {
+    <span class="hljs-keyword">this</span>.setState({
+      <span class="hljs-attr">visible</span>: <span class="hljs-literal">false</span>
+    })
+  }
+
+  render() {
+    <span class="hljs-keyword">return</span> (
+      &lt;View style={styles.container}&gt;
+        &lt;Toast
+          visible={this.state.visible}
+          message="Example"
+        /&gt;
+        &lt;Button title="Toggle Modal" onPress={this.handleButtonPress} /&gt;
+      &lt;/View&gt;
+    );
+  }
+}
+</code></pre>
 <h3><a class="anchor" aria-hidden="true" id="methods"></a><a href="#methods" aria-hidden="true" class="hash-link"><svg class="hash-link-icon" aria-hidden="true" height="16" version="1.1" viewBox="0 0 16 16" width="16"><path fill-rule="evenodd" d="M4 9h1v1H4c-1.5 0-3-1.69-3-3.5S2.55 3 4 3h4c1.45 0 3 1.69 3 3.5 0 1.41-.91 2.72-2 3.25V8.59c.58-.45 1-1.27 1-2.09C10 5.22 8.98 4 8 4H4c-.98 0-2 1.22-2 2.5S3 9 4 9zm9-3h-1v1h1c1 0 2 1.22 2 2.5S13.98 12 13 12H9c-.98 0-2-1.22-2-2.5 0-.83.42-1.64 1-2.09V6.25c-1.09.53-2 1.84-2 3.25C6 11.31 7.55 13 9 13h4c1.45 0 3-1.69 3-3.5S14.5 6 13 6z"></path></svg></a>Methods</h3>
 <ul>
 <li><a href="/react-native/docs/next/toastandroid#show"><code>show</code></a></li>