我如何在 React Native 中使用按钮截取屏幕截图?
how can i take screenshot with a button in react native?
我想开发一个简单的应用程序,可以通过按钮截取当前屏幕的屏幕截图。此代码 运行 成功但是当我按下捕获按钮时它不起作用并且 return 错误。
export default class App extends Component<{}> {
render() {
captureScreen({
format: "jpg",
quality: 0.8
})
.then(
uri => console.log("Image saved to", uri),
error => console.error("Oops, snapshot failed", error)
);
return (
<View style={styles.container}>
<Text style={styles.welcome}>
Welcome to React Native SnapShot!
</Text>
<Text style={styles.instructions}>
To get started, edit App.js
</Text>
<Text style={styles.instructions}>
{instructions}
</Text>
<Button
onPress={captureScreen.bind(this)}
title="capture"
color="#841584"
accessibilityLabel="Capture"
/>
</View>
);
}
}
为什么要在渲染中捕获屏幕截图?我认为您需要将屏幕截图片段移至单独的函数。
export default class App extends Component<{}> {
render() {
return (
<View style={styles.container}>
<Text style={styles.welcome}>
Welcome to React Native SnapShot!
</Text>
<Text style={styles.instructions}>
To get started, edit App.js
</Text>
<Text style={styles.instructions}>
{instructions}
</Text>
<Button
onPress={() => {
captureScreen({
format: "jpg",
quality: 0.8
})
.then(
uri => console.log("Image saved to", uri),
error => console.error("Oops, snapshot failed", error)
);
}}
title="capture"
color="#841584"
accessibilityLabel="Capture"
/>
</View>
);
}
}
我想开发一个简单的应用程序,可以通过按钮截取当前屏幕的屏幕截图。此代码 运行 成功但是当我按下捕获按钮时它不起作用并且 return 错误。
export default class App extends Component<{}> {
render() {
captureScreen({
format: "jpg",
quality: 0.8
})
.then(
uri => console.log("Image saved to", uri),
error => console.error("Oops, snapshot failed", error)
);
return (
<View style={styles.container}>
<Text style={styles.welcome}>
Welcome to React Native SnapShot!
</Text>
<Text style={styles.instructions}>
To get started, edit App.js
</Text>
<Text style={styles.instructions}>
{instructions}
</Text>
<Button
onPress={captureScreen.bind(this)}
title="capture"
color="#841584"
accessibilityLabel="Capture"
/>
</View>
);
}
}
为什么要在渲染中捕获屏幕截图?我认为您需要将屏幕截图片段移至单独的函数。
export default class App extends Component<{}> {
render() {
return (
<View style={styles.container}>
<Text style={styles.welcome}>
Welcome to React Native SnapShot!
</Text>
<Text style={styles.instructions}>
To get started, edit App.js
</Text>
<Text style={styles.instructions}>
{instructions}
</Text>
<Button
onPress={() => {
captureScreen({
format: "jpg",
quality: 0.8
})
.then(
uri => console.log("Image saved to", uri),
error => console.error("Oops, snapshot failed", error)
);
}}
title="capture"
color="#841584"
accessibilityLabel="Capture"
/>
</View>
);
}
}