hi am trying to load an remote image. onLoadStart is hitting but not the onLoadEnd `
<View style={{ paddingTop: 60, paddingBottom: 10 }}>
{this.state.loading ? (
<DotIndicator size={25} color={"white"} />
) : (
<Image
resizeMode={this.resizeMode}
style={[styles.imageStyle, this.tintStyle]}
onLoadStart={e => {
this.setState({ loading: true });
}}
onLoadEnd={e => this.setState({ loading: false })}
// defaultSource={NoProfile}
// loadingIndicatorSource={require("@images/profile_placeholder.png")}
source={this.userImageUri}
onError={error => {
this.tintStyle = { tintColor: "lightgray" };
this.resizeMode = "contain";
this.userImageUri = NoProfile;
}}
/>
)}
</View>
`
EDIT 1
onLoadStart is hit. onLoad is also never being called
does any one have a clue. am new to react. Any help is appreciated. thanks is advance
SOLUTION
Since Vignesh and hong mentioned the image is never there so its on loadEnd will never be called. So instead of loading only image or loader I loaded the loader on top of image. Posting this here as it may be useful for someone at sometime. Once again thanks to Vignesh and hong
<View
style={{
padding: 10,
width: WIDTH - 50,
height: WIDTH - 25,
alignSelf: "center"
}}
>
{this.state.loading ? (
<MaterialIndicator
size={50}
color={"red"}
style={{
marginTop: WIDTH / 2,
alignSelf: "center"
}}
/>
) : null}
<Image
resizeMode={this.resizeMode}
style={[styles.imageStyle, this.tintStyle]}
onLoadStart={e => {
this.setState({ loading: true });
}}
onLoad={e => {
this.setState({ loading: false });
}}
onLoadEnd={e => this.setState({ loading: false })}
// defaultSource={NoProfile}
// loadingIndicatorSource={require("@images/profile_placeholder.png")}
source={this.userImageUri}
onError={error => {
this.tintStyle = { tintColor: "lightgray" };
this.resizeMode = "contain";
this.userImageUri = NoProfile;
}}
/>
</View>
Let's say that the value of this.state.loading
was false
before the first render.
When the first render happens, this.state.loading ?
returns the Image
component, onLoadStart
is triggered and this.state.loading
is set to true
.
When the second render happens, this.state.loading
is found to be true
and this.state.loading ?
returns the DotIndicator
component. All the hard work done by the Image
component during the previous the render is lost. In fact, Image
component was never present in that context.
Hence, onLoadingEnd
will never be triggered, because Image
component never appeared in the second render.
And the DotIndicator
will forever go round and round and round... Waiting for it's lost love..
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