React Native For Android

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Gradle DSL method not found: 'url()'
Possible causes:The project '***' may be using a version of the Android Gradle plug-in that does not contain the method (e.g. 'testCompile' was added in 1.1.0).
<a href="fixGradleElements">
Upgrade plugin to version 3.0.0-alpha1 and sync project
The project '***' may be using a version of Gradle that does not contain the method.

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Warning:Conflict with dependency 'com.google.code.findbugs:jsr305'. Resolved versions for app (3.0.1) and test app (2.0.1) differ. See http://g.co/androidstudio/app-test-app-conflict for details.

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configurations.all {
resolutionStrategy.force 'com.google.code.findbugs:jsr305:1.3.9'
}

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Error:Dex writing phase: classes.dex has too many IDs. Try using multi-dex

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1. android {
defaultConfig {
// Enabling multidex support.
multiDexEnabled true
}
} (**添加在主module中，子module如果比较大，也可以添加**)
2. dependencies {
//noinspection GradleCompatible
compile 'com.android.support:multidex:1.0.1'} (**注意multidex为小写**)
3.在自己的Application中重写
@Override
protected void attachBaseContext(Context base) {
super.attachBaseContext(base);
MultiDex.install(this);
}

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android {
...
defaultConfig {
...
ndk {
abiFilters "armeabi-v7a", "x86"
}
}

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allprojects {
repositories {
jcenter()
maven {
url "$rootDir/node_modules/react-native/android"
}
}
}

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android{
configurations.all {
.....
resolutionStrategy.force 'com.squareup.okhttp3:okhttp:3.4.1'
}
}

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@Override
public boolean onKeyUp(int keyCode, KeyEvent event) {
//当我们点击菜单的时候打开发者菜单，一个弹窗（此处需要悬浮窗权限才能显示）
if (keyCode == KeyEvent.KEYCODE_VOLUME_UP && mReactInstanceManager != null) {
mReactInstanceManager.showDevOptionsDialog();
return true;
}
return super.onKeyUp(keyCode, event);
}

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public class IntentReactActivity extends AppCompatActivity implements DefaultHardwareBackBtnHandler {
private static final int OVERLAY_PERMISSION_REQ_CODE = 1;
private ReactRootView mReactRootView;
private ReactInstanceManager mReactInstanceManager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mReactRootView = new ReactRootView(this);
mReactInstanceManager = ReactInstanceManager.builder()
.setApplication(FIFApplication.getInstance())
.setBundleAssetName("index.android.bundle")
.setJSMainModuleName("index.android")
.addPackage(new MainReactPackage())
.addPackage(new IntentReactPackage(this))
.setUseDeveloperSupport(com.fif.wisdie.BuildConfig.DEBUG)
.setInitialLifecycleState(LifecycleState.RESUMED)
.build();
// 注意这里的HelloWorld必须对应“index.android.js”中的
// “AppRegistry.registerComponent()”的第一个参数
mReactRootView.startReactApplication(mReactInstanceManager, "***", null);
setContentView(mReactRootView);
}
@Override
protected void onPause() {
super.onPause();
if (mReactInstanceManager != null) {
mReactInstanceManager.onHostPause(this);
}
}
@Override
protected void onResume() {
super.onResume();
if (mReactInstanceManager != null) {
mReactInstanceManager.onHostResume(this, this);
}
}
@Override
protected void onDestroy() {
super.onDestroy();
if (mReactInstanceManager != null) {
mReactInstanceManager.onHostDestroy();
}
}
@Override
public void onBackPressed() {
if (mReactInstanceManager != null) {
mReactInstanceManager.onBackPressed();
} else {
super.onBackPressed();
}
}
}